Document:

<PAGE>   1

                                                                  Exhibit 10.44

                                  AMENDMENT NO. 2
                                         TO
                           WERNER HOLDING CO. (PA), INC.
                                STOCK INCENTIVE PLAN
                                --------------------

The Werner Holding Co. (PA), Inc. Stock Incentive Plan (the "Plan") is hereby
amended as follows:

     1.  Notwithstanding anything to the contrary in the Option Agreement,
         whenever pursuant to applicable provisions of the Options Agreement the
         Optionee shall have the right to put Option Shares to the Company or
         another entity following termination of Optionee's employment and such
         Option Shares have not been held by Optionee for at least six (6)
         months as of the date of such termination, in each such case the
         periods during which the put rights and call rights attributable to
         such Option Shares may be exercised shall not commence until such
         Options Shares have been held by Optionee for six (6) months.

     2.  All other provisions of the Plan unchanged hereby shall continue in
         full force and effect.

Pursuant to Werner Holding Co. (PA), Inc. Board of Directors action dated
December 15, 1999.<PAGE>   1
EXHIBIT NO. 4(A)

================================================================================

                           THE PROGRESSIVE CORPORATION

                                       AND

                           RHODE ISLAND HOSPITAL TRUST
                                 NATIONAL BANK,
                                              Trustee

                                 --------------

                                    INDENTURE

                                 --------------

                          Dated as of November 15, 1988

================================================================================

<PAGE>   2

                             CROSS REFERENCE SHEET*

                                     -------
                                     Between

         Provisions of Trust Indenture Act of 1939 and Indenture to be dated as
of November 15, 1988 between THE PROGRESSIVE CORPORATION and RHODE ISLAND
HOSPITAL TRUST NATIONAL BANK, Trustee:

Section of the Act                                      Section of Indenture
- - - -------------------                               --------------------
310(a)(1) and (2) . . . . . . . . . . . . . . . .  . .  6.9
310(a)(3) and (4) . . . . . . . . . . . . . . . .  . .  Inapplicable
310(b)  . . . . . . . . . . . . . . . . . . . . .  . .  6.8 and 6.10(a), (b)
                                                        and (d)
310(c)  . . . . . . . . . . . . . . . . . . . . .  . .  Inapplicable
311(a)  . . . . . . . . . . . . . . . . . . . . .  . .  6.13(a) and (c)(1)
                                                        and (2)
311(b)  . . . . . . . . . . . . . . . . . . . . .  . .  6.13(b)
311(c)  . . . . . . . . . . . . . . . . . . . . .  . .  Inapplicable
312(a)  . . . . . . . . . . . . . . . . . . . . .  . .  4.1 and 4.2(a)
312(b)  . . . . . . . . . . . . . . . . . . . . .  . .  4.2(a) and (b)(i)
                                                        and (ii)
312(c)  . . . . . . . . . . . . . . . . . . . . .  . .  4.2(c)
313(a)  . . . . . . . . . . . . . . . . . . . . .  . .  4.4(a)(i), (ii), (iii),
                                                        (iv), (v) and (vi)
313(b)(1) . . . . . . . . . . . . . . . . . . . .  . .  Inapplicable
313(b)(2) . . . . . . . . . . . . . . . . . . . .  . .  4.4
313(c)  . . . . . . . . . . . . . . . . . . . . .  . .  4.4
313(d)  . . . . . . . . . . . . . . . . . . . . .  . .  4.4
314(a)  . . . . . . . . . . . . . . . . . . . . .  . .  4.3
314(b)  . . . . . . . . . . . . . . . . . . . . .  . .  Inapplicable
314(c)(1) and (2) . . . . . . . . . . . . . . . .  . .  11.5
314(c)(3) . . . . . . . . . . . . . . . . . . . .  . .  Inapplicable
314(d)  . . . . . . . . . . . . . . . . . . . . .  . .  Inapplicable
314(e)  . . . . . . . . . . . . . . . . . . . . .  . .  11.5
314(f)  . . . . . . . . . . . . . . . . . . . . .  . .  Inapplicable
315(a), (c) and (d) . . . . . . . . . . . . . . .  . .  6.1
315(b)  . . . . . . . . . . . . . . . . . . . . .  . .  5.11
315(e)  . . . . . . . . . . . . . . . . . . . . .  . .  5.12
316(a)(1) . . . . . . . . . . . . . . . . . . . .  . .  5.9
316(a)(2) . . . . . . . . . . . . . . . . . . . .  . .  Not required
316(a) (last sentence)  . . . . . . . . . . . . .  . .  7.4
316(b)  . . . . . . . . . . . . . . . . . . . . .  . .  5.7
317(a)  . . . . . . . . . . . . . . . . . . . . .  . .  5.2
317(b)  . . . . . . . . . . . . . . . . . . . . .  . .  3.4(a) and (b)
318(a)  . . . . . . . . . . . . . . . . . . . . .  . .  11.7

* This Cross Reference Sheet is not part of the Indenture.

<PAGE>   3

                                TABLE OF CONTENTS
                                -----------------

                                                                            PAGE
                                                                            ----

PARTIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
RECITALS:

     Authorization of Indenture   . . . . . . . . . . . . . . . . . . . . . . 1
     Compliance with Legal Requirements                                       1
     Purpose of and Consideration for Indenture   . . . . . . . . . . . . . . 1

                                   ARTICLE ONE

                                   DEFINITIONS

SECTION  1.1.           Certain Terms Defined . . . . . . . . . . . . . . . . 1
                        Authorized Newspaper  . . . . . . . . . . . . . . . . 2
                        Board of Directors  . . . . . . . . . . . . . . . . . 2
                        Business Day  . . . . . . . . . . . . . . . . . . . . 2
                        Commission  . . . . . . . . . . . . . . . . . . . . . 2
                        Corporate Trust Office  . . . . . . . . . . . . . . . 2
                        Coupon  . . . . . . . . . . . . . . . . . . . . . . . 2
                        ECU . . . . . . . . . . . . . . . . . . . . . . . . . 3
                        European Communities  . . . . . . . . . . . . . . . . 3
                        Event of Default  . . . . . . . . . . . . . . . . . . 3
                        Foreign Currency  . . . . . . . . . . . . . . . . . . 3
                        Holder, holder of Securities, Securityholder  . . . . 3
                        Indebtedness  . . . . . . . . . . . . . . . . . . . . 3
                        Indenture . . . . . . . . . . . . . . . . . . . . . . 4
                        Interest  . . . . . . . . . . . . . . . . . . . . . . 4
                        Issuer  . . . . . . . . . . . . . . . . . . . . . . . 4
                        Officers' Certificate . . . . . . . . . . . . . . . . 4
                        Opinion of Counsel  . . . . . . . . . . . . . . . . . 4
                        Original issue date . . . . . . . . . . . . . . . . . 4
                        Original Issue Discount Security  . . . . . . . . . . 4
                        Outstanding . . . . . . . . . . . . . . . . . . . . . 4
                          Person  . . . . . . . . . . . . . . . . . . . . . . 5
                        principal . . . . . . . . . . . . . . . . . . . . . . 5
                        Registered Security . . . . . . . . . . . . . . . . . 5
                        Responsible Officer . . . . . . . . . . . . . . . . . 5
                        Security or Securities  . . . . . . . . . . . . . . . 6
                        Senior Indebtedness . . . . . . . . . . . . . . . . . 6
                        Subordinated Indebtedness . . . . . . . . . . . . . . 6
                        Subsidiary  . . . . . . . . . . . . . . . . . . . . . 6
                        Trustee . . . . . . . . . . . . . . . . . . . . . . . 6
                        Trust Indenture Act of 1939 . . . . . . . . . . . . . 6
                        Unregistered Security . . . . . . . . . . . . . . . . 6

<PAGE>   4

                                       ii

                                                                            PAGE
                                                                            ----

                U.S. Government Obligations  . . . . . . . . . . . . . . .    6
                vice president   . . . . . . . . . . . . . . . . . . . . .    6
                Yield to Maturity  . . . . . . . . . . . . . . . . . . . .    7

                                   ARTICLE TWO

                                   SECURITIES

SECTION  2.1.   Forms Generally  . . . . . . . . . . . . . . . . . . . . .    7
SECTION  2.2.   Form of Trustee's Certificate of Authentication  . . . . .    7
SECTION  2.3.   Amount Unlimited; Issuable in Series   . . . . . . . . . .    8
SECTION  2.4.   Authentication and Delivery of Securities  . . . . . . . .   10
SECTION  2.5.   Execution of Securities  . . . . . . . . . . . . . . . . .   11
SECTION  2.6.   Certificate of Authentication  . . . . . . . . . . . . . .   12
SECTION  2.7.   Denomination and Date of Securities; Payments of
                  Interest   . . . . . . . . . . . . . . . . . . . . . . .   12
SECTION  2.8.   Registration, Transfer and Exchange  . . . . . . . . . . .   14
SECTION  2.9.   Mutilated, Defaced, Destroyed Lost and Stolen
                  Securities   . . . . . . . . . . . . . . . . . . . . . .   17
SECTION  2.10.  Cancellation of Securities; Destruction Thereof  . . . . .   18
SECTION  2.11.  Temporary Securities   . . . . . . . . . . . . . . . . . .   18

                                  ARTICLE THREE

                             COVENANTS OF THE ISSUER

SECTION  3.1.   Payment of Principal and Interest  . . . . . . . . . . . .   19
SECTION  3.2.   Offices for Payments, etc  . . . . . . . . . . . . . . . .   20
SECTION  3.3.   Appointment to Fill a vacancy in Office of Trustee   . . .   21
SECTION  3.4.   Paying Agents  . . . . . . . . . . . . . . . . . . . . . .   21
SECTION  3.5.   Written Statement to Trustee   . . . . . . . . . . . . . .   22
SECTION  3.6.   Luxembourg Publications  . . . . . . . . . . . . . . . . .   22

                                  ARTICLE FOUR

                    SECURITYHOLDERS' LISTS AND REPORTS BY THE
                             ISSUER AND THE TRUSTEE

SECTION  4.1.   Issuer to Furnish Trustee Information as to Names and
                  Addresses of Securityholders   . . . . . . . . . . . . .   23
SECTION  4.2.   Preservation and Disclosure of Securityholders'
                  Lists . . . . . . . . . . . . . . . . . . . . . . . . .    23
SECTION  4.3.   Reports by the Issuer  . . . . . . . . . . . . . . . . . .   25
SECTION  4.4.   Reports by the Trustee   . . . . . . . . . . . . . . . . .   26

<PAGE>   5

                                       iii

                                                                            PAGE
                                                                            ----

                                  ARTICLE FIVE

                   REMEDIES OF THE TRUSTEE AND SECURITYHOLDERS
                               ON EVENT OF DEFAULT

SECTION  5.1.   Event of Default Defined; Acceleration of Maturity;
                  Waiver of Default . . . . . . . . . . . . . . . . . . . . . 28
SECTION  5.2.   Collection of Indebtedness by Trustee; Trustee May
                  Prove Debt . . . . . . . . . . . . . . . . . . . . . . . .. 31
SECTION  5.3.   Application of Proceeds . . . . . . . . . . . . . . . . . . . 34
SECTION  5.4.   Suits for Enforcement . . . . . . . . . . . . . . . . . . . . 35
SECTION  5.5.   Restoration of Rights on Abandonment of
                  Proceedings . . . . . . . . . . . . . . . . . . . . . . . . 35
SECTION  5.6.   Limitations on Suits by Securityholders . . . . . . . . . . . 36
SECTION  5.7.   Unconditional Right of Securityholders to Institute
                  Certain Suits . . . . . . . . . . . . . . . . . . . . . . . 37
SECTION  5.8.   Powers and Remedies Cumulative; Delay or Omission
                  Not Waiver of Default . . . . . . . . . . . . . . . . . . . 37
SECTION  5.9.   Control by Securityholders  . . . . . . . . . . . . . . . . . 37
SECTION  5.10.  Waiver of Past Defaults . . . . . . . . . . . . . . . . . . . 38
SECTION  5.11.  Trustee to Give Notice of Default, But May Withhold
                  in Certain Circumstances  . . . . . . . . . . . . . . . . . 39
SECTION  5.12.  Right of Court to Require Filing of Undertaking to Pay
                  Costs . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

                                  ARTICLE SIX

                             CONCERNING THE TRUSTEE

SECTION  6.1.   Duties and Responsibilities of the Trustee; During
                  Default; Prior to Default . . . . . . . . . . . . . . . . . 40
SECTION  6.2.   Certain Rights of the Trustee . . . . . . . . . . . . . . . . 41
SECTION  6.3.   Trustee Not Responsible for Recitals, Disposition of
                  Securities or Application of Proceeds Thereof . . . . . . . 43
SECTION  6.4.   Trustee and Agents May Hold Securities or Coupons;
                  Collections, etc . . . . . . . . . . . . . . . . . . .  . . 43
SECTION  6.5.   Moneys Held by Trustee  . . . . . . . . . . . . . . . . . . . 43
SECTION  6.6.   Compensation and Indemnification of Trustee and Its
                  Prior Claim . . . . . . . . . . . . . . . . . . . . . . . . 44
SECTION  6.7.   Right of Trustee to Rely on Officers' Certificate, etc. . . . 44
SECTION  6.8.   Qualification of Trustee; Conflicting Interests . . . . . . . 45
SECTION  6.9.   Persons Eligible for Appointment as Trustee . . . . . . . . . 51

<PAGE>   6

                                       iv

                                                                            PAGE
                                                                            ----

SECTION  6.10.  Resignation and Removal; Appointment of Successor
                 Trustee . . . . . . . . . . . . . . . . . . . . . . . .  .  52
SECTION  6.11.  Acceptance of Appointment by Successor Trustee  . . . . . .  53
SECTION  6.12.  Merger, Conversion, Consolidation or Succession to
                  Business of Trustee . . . . . . . . . . . . . . . . . . .  55
SECTION  6.13.  Preferential Collection of Claims Against the
                  Issuer . . . . . .  . . . . . . . . . . . . .  .  . . . .  55

                                  ARTICLE SEVEN

                         CONCERNING THE SECURITYHOLDERS

SECTION  7.1.   Evidence of Action Taken by Securityholders . . . . . . . .  60
SECTION  7.2.   Proof of Execution of Instruments and of Holding of
                  Securities . . . . . . . . . . . . . . . . . . . . . .  .  60
SECTION  7.3.   Holders to be Treated as Owners . . . . . . . . . . . . . .  61
SECTION  7.4.   Securities Owned by Issuer Deemed Not Outstanding . . . . .  62
SECTION  7.5.   Right of Revocation of Action Taken . . . . . . . . . . . .  63

                                  ARTICLE EIGHT

                             SUPPLEMENTAL INDENTURES

SECTION  8.1.   Supplemental Indentures Without Consent of Security-
                  holders . . . . . . . . . . . . . . . . . . . . . . . . .  63
SECTION  8.2.   Supplemental Indentures With Consent of
                  Securityholders . . . . . . . . . . . . . . . . . . . . .  65
SECTION  8.3.   Effect of Supplemental Indenture  . . . . . . . . . . . . .  66
SECTION  8.4.   Documents to Be Given to Trustee  . . . . . . . . . . . . .  67
SECTION  8.5.   Notation on Securities in Respect of Supplemental
                  Indentures . . . . . . . . . . . . . . . . .  . . . . . .  67

                                  ARTICLE NINE

                    CONSOLIDATION, MERGER, SALE OR CONVEYANCE

SECTION  9.1.   Issuer May Consolidate, etc., on Certain Terms  . . . . . .  67
SECTION  9.2.   Successor Corporation Substituted . . . . . . . . . . . . .  68
SECTION  9.3.   Opinion of Counsel to Trustee . . . . . . . . . . . . . . .  69

<PAGE>   7

                                        v

<TABLE>
<CAPTION>

                                                                                    PAGE
                                                                                    ----

                                   ARTICLE TEN

            SATISFACTION AND DISCHARGE OF INDENTURE; UNCLAIMED MONEYS

<S>                                                                                  <C>
SECTION 10.1.   Satisfaction and Discharge of Indenture . . . . . . . . . . . . . . . 69
SECTION 10.2.   Application by Trustee of Funds Deposited for Payment of Securities . 72
SECTION 10.3.   Repayment of Moneys Held by Paying Agent  . . . . . . . . . . . . . . 72
SECTION 10.4.   Return of Moneys Held by Trustee and Paying Agent Unclaimed
                  for Two Years . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
SECTION 10.5.   Indemnity for U.S. Government Obligations . . . . . . . . . . . . . . 73

                                 ARTICLE ELEVEN

                            MISCELLANEOUS PROVISIONS

SECTION 11.1.   Incorporators, Shareholders, Officers and Directors of
                  Issuer Exempt from Individual Liability . . . . . . . . . . . . . . 73
SECTION 11.2.   Provisions of Indenture for the Sole Benefit of Parties
                  and Securityholders . . . . . . . . . . . . . . . . . . . . . . . . 74
SECTION 11.3.   Successors and Assigns of Issuer Bound by Indenture . . . . . . . . . 74
SECTION 11.4.   Notices and Demands on Issuer, Trustee and Securityholders  . . . . . 74
SECTION 11.5.   Officers' Certificates and Opinions of Counsel; Statements to Be
                  Contained Therein . . . . . . . . . . . . . . . . . . . . . . . . . 75
SECTION 11.6.   Payments Due on Saturdays, Sundays and Holidays   . . . . . . . . . . 76
SECTION 11.7.   Conflict of Any Provision of Indenture with Trust
                  Indenture Act of 1939 . . . . . . . . . . . . . . . . . . . . . . . 76
SECTION 11.8.   New York Law to Govern  . . . . . . . . . . . . . . . . . . . . . . . 77
SECTION 11.9.   Counterparts  . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
SECTION 11.10.  Effect of Headings  . . . . . . . . . . . . . . . . . . . . . . . . . 77
SECTION 11.11.  Securities in Foreign Currencies or in ECU  . . . . . . . . . . . . . 77

                                 ARTICLE TWELVE

                   REDEMPTION OF SECURITIES AND SINKING FUNDS

SECTION 12.1.   Applicability of Article  . . . . . . . . . . . . . . . . . . . . . . 77
SECTION 12.2.   Notice of Redemption; Partial Redemptions . . . . . . . . . . . . . . 78
SECTION 12.3.   Payment of Securities Called for Redemption . . . . . . . . . . . . . 79
SECTION 12.4.   Exclusion of Certain Securities from Eligibility for
                  Selection for Redemption  . . . . . . . . . . . . . . . . . . . . . 80
SECTION 12.5.   Mandatory and Optional Sinking Funds  . . . . . . . . . . . . . . . . 81

</TABLE>

<PAGE>   8

                                       vi

                                                                            PAGE
                                                                            ----

                                ARTICLE THIRTEEN

                            SUBORDINATION; SENIORITY

SECTION 13.1.   Securities Subordinated to Senior Indebtedness  . . . . . .  84
SECTION 13.2.   Issuer Not to Make Payments with Respect to Securities
                  in Certain Circumstances  . . . . . . . . . . . . . . . .  84
SECTION 13.3.   Subrogation of Securities . . . . . . . . . . . . . . . . .  87
SECTION 13.4.   Authorization by Holders of Securities  . . . . . . . . . .  88
SECTION 13.5.   Notices to Trustee  . . . . . . . . . . . . . . . . . . . .  88
SECTION 13.6.   Trustee's Relation to Senior Indebtedness . . . . . . . . .  89
SECTION 13.7.   No Impairment of Subordination  . . . . . . . . . . . . . .  89
SECTION 13.8.   Article 13 Not to Prevent Events of Default . . . . . . . .  90
SECTION 13.9.   Paying Agents other than the Trustee  . . . . . . . . . . .  90
SECTION 13.10.  Securities Senior to Subordinated Indebtedness  . . . . . .  90

TESTIMONIUM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  91

SIGNATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

ACKNOWLEDGMENTS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

<PAGE>   9

         THIS INDENTURE, dated as of November 15, 1988, between THE PROGRESSIVE
CORPORATION, an Ohio corporation (the "Issuer"), and RHODE ISLAND HOSPITAL TRUST
NATIONAL BANK, a national banking association (the "Trustee"),

                                   WITNESSETH:

         WHEREAS, the Issuer has duly authorized the issue from time to time of
its unsecured debentures, notes or other evidences of indebtedness to be issued
in one or more series (the "Securities") up to such principal amount or amounts
as may from time to time be authorized in accordance with the terms of this
Indenture and to provide, among other things, for the authentication, delivery
and administration thereof, the Issuer has duly authorized the execution and
delivery of this Indenture; and

         WHEREAS, all things necessary to make this Indenture a valid indenture
and agreement according to its terms have been done;

         Now, THEREFORE:

         In consideration of the premises and the purchases of the Securities by
the holders thereof, the Issuer and the Trustee mutually covenant and agree for
the equal and proportionate benefit of the respective holders from time to time
of the Securities and of the Coupons, if any, appertaining thereto as follows:

                                   ARTICLE ONE

                                   DEFINITIONS

         SECTION 1.1 Certain Terms Defined. The following terms (except as
otherwise expressly provided or unless the context otherwise clearly requires)
for all purposes of this Indenture and of any indenture supplemental hereto
shall have the respective meanings specified in this Section. All other terms
used in this Indenture that are defined in the Trust Indenture Act of 1939 or
the definitions of which in the Securities Act of 1933 are referred to in the
Trust Indenture Act of 1939, including terms defined therein by reference to the
Securities Act of 1933 (except as herein otherwise expressly provided or unless
the context otherwise clearly requires), shall have the meanings assigned to
such terms in said Trust Indenture Act and in said Securities Act as in force at
the date of this Indenture. All accounting terms used herein and not expressly
defined shall have the meanings assigned to such terms in accordance with
generally accepted accounting principles, and the term "generally accepted
accounting principles" means such accounting principles as

<PAGE>   10

                                        2

are generally accepted at the time of any computation. The words "herein",
"hereto" and "hereunder" and other words of similar import refer to this
Indenture as a whole and not to any particular Article, Section or other
subdivision. The terms defined in this Article have the meanings assigned to
them in this Article and include the plural as well as the singular.

         "Authorized Newspaper" means a newspaper (which, in the case of the
United Kingdom, will, if practicable, be the Financial Times (London Edition)
and, in the case of Luxembourg, will, if practicable, be the Luxemburger Wort)
published in English or an official language of the country of publication
customarily published at least once a day for at least five days in each
calendar week and of general circulation in the United Kingdom or in Luxembourg,
as applicable. If it shall be impractical in the opinion of the Trustee to make
any publication of any notice required hereby in an Authorized Newspaper, any
publication or other notice in lieu thereof which is made or given with the
approval of the Trustee shall constitute a sufficient publication of such
notice.

         "Board of Directors" means either the Board of Directors of the Issuer
or any committee of such Board duly authorized to act hereunder.

         "Business Day" means, with respect to any Security, a day that in the
city (or in any of the cities, if more than one) in which amounts are payable,
as specified in the form of such Security, is not a day on which banking
institutions are authorized by law or regulation to close or a day on which
transactions in the currency in which the Securities are payable are not
conducted.

         "Commission" means the Securities and Exchange Commission, as from time
to time constituted, created under the Securities Exchange Act of 1934, or if at
any time after the execution and delivery of this Indenture such Commission is
not existing and performing the duties now assigned to it under the Trust
Indenture Act, then the body performing such duties on such date.

         Corporate Trust Office" means the office of the Trustee at which the
corporate trust business of the Trustee shall, at any particular time, be
principally administered, which office is, at the date as of which this
Indenture is dated, located at 15 Westminster Street, Room 737W, Providence,
Rhode Island 02903, Attn: Corporate Trust Administration.

         "Coupon" means any interest coupon appertaining to a Security.

<PAGE>   11

                                        3

         "ECU" means the European Currency Unit as defined and revised from time
to time by the council of European Communities.

         "European Communities" means the European Economic Community (the
"EEC"), the European Coal and Steel Community and Euratom.

         "Event of Default" means any event or condition specified as such in
Section 5.1.

         "Foreign Currency" means a currency issued by the government of a
country other than the United States.

         "Holder," "Holder of Securities," "Securityholder" or other similar
terms mean (a) in the case of any Registered Security, the Person in whose name
such Security is registered in the security register kept by the Issuer for that
purpose in accordance with the terms hereof, and (b) in the case of any
Unregistered Security, the bearer of such Security, or any Coupon appertaining
thereto, as the case may be.

         "Indebtedness" with respect to any Person means:

                 (1) any debt (i) for borrowed money, or (ii) evidenced by a
         bond, note, debenture, or similar instrument (including purchase money
         obligations) given in connection with the acquisition of any business,
         property or assets, whether by purchase, merger, consolidation or
         otherwise, but shall not include any account payable or other
         obligation created or assumed by a Person in the ordinary course of
         business in connection with the obtaining of materials or services, or
         (iii) which is a direct or indirect obligation which arises as a result
         of banker's acceptances or drawings under bank letters of credit issued
         to secure obligations of such person, whether contingent or otherwise;

                 (2) any debt of others described in the preceding clause (1)
         which such Person has guaranteed or for which it is otherwise liable;

                 (3) the obligation of such Person as lessee under any lease of
         property which is reflected on such Person's balance sheet as a
         capitalized lease; and

                 (4) any deferral, amendment, renewal, extension, supplement or
         refunding of any liability of the kind described in any of the
         preceding clauses (1), (2) and (3) provided, however, that, in
         computing the "Indebtedness" of any Person, there shall be excluded any
         particular

<PAGE>   12

                                        4

         indebtedness if, upon or prior to the maturity thereof, there shall
         have been deposited with the depository in trust money (or evidences of
         indebtedness if permitted by the instrument creating such indebtedness)
         in the necessary amount to pay, redeem or satisfy such indebtedness as
         it becomes due, and the amount so deposited shall not be included in
         any computation of the assets of such Person.

         "Indenture" means this instrument as originally executed and delivered
or, if amended or supplemented as herein provided, as so amended or supplemented
or both, and shall include the forms and terms of particular series of
Securities established as contemplated hereunder.

         "Interest" means, when used with respect to non-interest bearing
Securities, interest payable after maturity.

         "lssuer" means (except as otherwise provided in Article Six) THE
PROGRESSIVE CORPORATION, an Ohio corporation, and, subject to Article Nine, its
successors and assigns.

         "Officers' Certificate" means a certificate signed by the chairman of
the Board of Directors or the president or any vice president or by the
treasurer and by the secretary or any assistant secretary of the Issuer and
delivered to the Trustee. Each such certificate shall include the statements
provided for in Section 11.5.

         "Opinion of Counsel" means an opinion in writing signed by legal
counsel who may be an employee of or counsel to the Issuer or other counsel who
shall be satisfactory to the Trustee. Each such opinion shall include the
statements provided for in Section 11.5, if and to the extent required hereby.

         "Original Issue Date" of any Security (or portion thereof) means the
earlier of (a) the date of such Security or (b) the date of any Security (or
portion thereof) for which such Security was issued (directly or indirectly) on
registration of transfer, exchange or substitution.

         "Original Issue Discount Security" means any Security that provides for
an amount less than the principal amount thereof to be due and payable upon a
declaration of acceleration of the maturity thereof pursuant to Section 5.1.

         "Outstanding" (except as otherwise provided in Section 6.8), when used
with reference to Securities, shall, subject to the provisions of Section 7.4,
means, as of any particular time, all Securities authenticated and delivered by
the Trustee under this Indenture, except

<PAGE>   13

                                        5

                 (a) Securities theretofore cancelled by the Trustee or
         delivered to the Trustee for cancellation;

                 (b) Securities, or portions thereof, for the payment or
         redemption of which moneys in the necessary amount shall have been
         deposited in trust with the Trustee or with any paying agent (other
         than the Issuer) or shall have been set aside, segregated and held in
         trust by the Issuer for the holders of such Securities (if the Issuer
         shall act as its own paying agent), provided that if such Securities,
         or portions thereof, are to be redeemed prior to the maturity thereof,
         notice of such redemption shall have been given as herein provided, or
         provision satisfactory to the Trustee shall have been made for giving
         such notice; and

                 (c) Securities in substitution for which other Securities shall
         have been authenticated and delivered, or which shall have been paid,
         pursuant to the terms of Section 2.9 (except with respect to any such
         Security as to which proof satisfactory to the Trustee is presented
         that such Security is held by a person in whose hands such Security is
         a legal, valid and binding obligation of the Issuer).

         In determining whether the holders of the requisite principal amount of
Outstanding Securities of any or all series have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, the principal
amount of all Original Issue Discount Security that shall be deemed to be
Outstanding for such purposes shall be the amount of the principal thereof that
would be due and payable as of the date of such determination upon a declaration
of acceleration of the maturity thereof pursuant to Section 5.1.

         "Person" means any individual, corporation, partnership, joint venture,
association, joint stock company, trust, unincorporated organization or
government or any agency or political subdivision thereof.

         "principal" whenever used with reference to the Securities or any
Security or any portion thereof, shall be deemed to include "and premium, if
any."

         "Registered Security" means any Security registered on the Security
Register of the Issuer.

         "Responsible Officer" when used with respect to the Trustee means any
officer or assistant officer assigned by the Trustee to administer its corporate
trust matters.

<PAGE>   14

                                        6

         "Security" or "Securities" (except as otherwise provided in Section
6.8) has the meaning stated in the first recital of this Indenture, or, as the
case may be, Securities that have been authenticated and delivered under this
Indenture.

         "Senior Indebtedness" means the principal and unpaid interest on
Indebtedness of the Company outstanding at any time, other than (1) the
Securities, (2) Indebtedness of the Issuer to a Subsidiary for money borrowed or
advanced from any Subsidiary, except for such Indebtedness which the Subsidiary
has borrowed from a third party other than a Subsidiary and advanced to the
Company, (3) the Company's Floating Rate Convertible Subordinated Debentures due
2008 issued in the aggregate principal amount of $75,000,000 ("Floating Rate
Convertible Subordinated Debentures"), and (4) any other Indebtedness which by
its terms expressly provides that it is not superior in right of payment to the
Securities.

         "Subordinated Indebtedness" means the principal and interest on any
Indebtedness of the Company which by its terms is expressly subordinated in
right of payment to the Securities (including without limitation the Floating
Rate Convertible Subordinated Debentures).

         "Subsidiary" means a corporation the majority of whose voting stock is
owned by the Company or a Subsidiary. Voting stock is capital stock having
voting power under the ordinary circumstances to elect directors.

         "Trustee" means the Person identified as "Trustee" in the first
paragraph hereof and, subject to the provisions of Article Six, shall also
include any successor trustee.

         "Trust Indenture Act of 1939" (except as otherwise provided in Sections
8.1 and 8.2) means the Trust Indenture Act of 1939 as in force at the date as of
which this Indenture was originally executed.

         "Unregistered Security" means any Security other than a Registered
Security.

         "U.S. Government Obligations" means direct obligations of the United
States of America, backed by its full faith and credit.

         "vice president" when used with respect to the Issuer, means any vice
president, whether or not designated by a number or a word or words added before
or after the title of "vice president".

<PAGE>   15

                                        7

         "Yield to Maturity" means the yield to maturity on a series of
securities, calculated at the time of issuance of such series, or, if
applicable, at the most recent redetermination of interest on such series, and
calculated in accordance with accepted financial practice.

                                   ARTICLE TWO

                                   SECURITIES

         SECTION 2.1 Forms Generally. The Securities of each series and the
Coupons, if any, to be attached thereto shall be substantially in such form (not
inconsistent with this Indenture) as shall be established by or pursuant to a
resolution of the Board of Directors or in one or more indentures supplemental
hereto, in each case with such appropriate insertions, omissions, substitutions
and other variations as are required or permitted by this Indenture and may have
imprinted or otherwise reproduced thereon such legend or legends, not
inconsistent with the provisions of this Indenture, as may be required to comply
with any law or with any rules or regulations pursuant thereto, or with any
rules of any securities exchange or to conform to general usage, all as may be
determined by the officers executing such Securities and Coupons, as evidenced
by their execution of the Securities and Coupons.

         The definitive Securities and Coupons shall be printed, lithographed or
engraved on steel engraved borders or may be produced in any other manner, all
as determined by the officers executing such Securities and Coupons, as
evidenced by their execution of such Securities and Coupons.

         SECTION 2.2 Form of Trustees Certificate of Authentication. The
Trustee's certificate of authentication on all Securities shall be in
substantially the following form:

         This is one of the Securities, of the series designated herein,
referred to in the within-mentioned Indenture.

                          TRUSTEE,
                                  as Trustee

                         By ____________________________________________________
                                            Authorized Signatory

<PAGE>   16

                                        8

         SECTION 2.3 Amount Unlimited; Issuable in Series. The aggregate
principal amount of Securities which may be authenticated and delivered under
this Indenture is unlimited.

         The Securities may be issued in one or more series. There shall be
established in or pursuant to a resolution of the Board of Directors and set
forth in an Officers' Certificate, or established in one or more indentures
supplemental hereto, prior to the issuance of Securities of any series,

                 (1) the title of the Securities of the series (which shall
         distinguish the Securities of the series from all other Securities);

                 (2) any limit upon the aggregate principal amount of the
         Securities of the series that may be authenticated and delivered under
         this Indenture (except for Securities authenticated and delivered upon
         registration of transfer of, or in exchange for, or in lieu of, other
         Securities of the series pursuant to Section 2.8, 2.9, 2.11 or 12.3);

                 (3) the date or dates on which the principal of the Securities
         of the series is payable or the method by which such date or dates
         shall be determined;

                 (4) the rate or rates at which the Securities of the series
         shall bear interest, if any, or the method by which such rate shall be
         determined, the date or dates from which such interest shall accrue,
         the interest payment dates on which such interest shall be payable and
         the record dates for the determination of Holders to whom interest is
         payable;

                 (5) the place or places where the principal and any interest
         on Securities of the series shall be payable;

                 (6) the price or prices at which, the period or periods within
         which and the terms and conditions upon which Securities of the series
         may be redeemed, in whole or in part, at the option of the Issuer,
         pursuant to any sinking fund or otherwise;

                 (7) the obligation, if any, of the Issuer to redeem, purchase
         or repay Securities of the series pursuant to any sinking fund or
         analogous provisions or at the option of a Holder thereof and the price
         or prices at which and the period or periods within which and the terms
         and conditions upon which Securities of the series shall be redeemed,
         purchased or repaid, in whole or in part, pursuant to such obligation;

<PAGE>   17

                                        9

                 (8) if other than denominations of U.S. $1,000 and any
         integral multiple thereof, in the case of Registered Securities, or
         U.S. $1,000 in the case of Unregistered Securities, the denominations
         in which Securities of the series shall be issuable;

                 (9) if other than the principal amount thereof, the portion of
         the principal amount of Securities of the series which shall be payable
         upon declaration of acceleration of the maturity thereof pursuant to
         Section 5.1 or provable in bankruptcy pursuant to Section 5.2;

                 (10) any authenticating or paying agents, transfer agents or
         registrars or any other agents with respect to the Securities of such
         series;

                 (11) if other than such coin or currency of the United States
         of America as at the time of payment is legal tender for payment of
         public or private debts, the coin or currency or units based on or
         relating to currencies (including ECU) in which payment of the
         principal of and interest, if any, on the Securities of that series
         shall be payable;

                 (12) if the principal of or interest, if any, on the Securities
         of that series are to be payable, at the election of the Issuer or a
         holder thereof, in a coin or currency or units based on or relating to
         currencies (including ECU) other than that in which the Securities are
         stated to be payable, the period or periods within which, and the terms
         and conditions upon which, such election may be made;

                 (13) if the amount of payments of principal of or interest, if
         any, on the Securities of the series may be determined with reference
         to an index, formula or other method based on a coin or currency or
         units based on or relating to currencies (including ECU) other than
         that in which the Securities are stated to be payable, the manner in
         which such amounts shall be determined;

                 (14) whether the Securities of the series will be issuable as
         Registered Securities or Unregistered Securities (with or without
         Coupons), or both, any restrictions applicable to the offer, sale or
         delivery of Unregistered Securities and, if other than as provided in
         Section 2.8, the terms upon which Unregistered Securities of any series
         may be exchanged for Registered Securities of such series and vice
         versa;

<PAGE>   18

                                       10

                 (15) whether and under what circumstances the Issuer will pay
         additional amounts on the Securities of the series held by a Person who
         is not a U.S. person in respect of any tax, assessment or governmental
         charge withheld or deducted and, if so, whether the Issuer will have
         the option to redeem such Securities rather than pay such additional
         amounts;

                 (16) if the Securities of such series are to be issuable in
         definitive form (whether upon original issue or upon exchange of a
         temporary Security of such series) only upon receipt of certain
         certificates or other documents or satisfaction of other conditions not
         otherwise set forth herein, then the form and terms of such
         certificates, documents or conditions;

                 (17) the degree to which such Securities shall be subordinated
         to any other securities of the Issuer; and

                 (18) any other terms of the series, including provisions for
         payment by wire transfers, if any, or modifications of the definition
         of Business Day (which terms shall not adversely affect the interests
         of the Holders of the Securities).

         All Securities of any one series shall be substantially identical
except as to denomination and except as may otherwise be provided in or pursuant
to such resolution of the Board of Directors or in any such indenture
supplemental hereto.

         SECTION 2.4 Authentication and Delivery of Securities. At any time and
from time to time after the execution and delivery of this Indenture, the Issuer
may deliver Securities of any series (having attached thereto appropriate
Coupons, if any), executed by the Issuer to the Trustee for authentication, and
the Trustee shall thereupon authenticate and deliver such Securities and
Coupons, if any, to or upon the written order of the Issuer, signed by both (a)
the chairman of its Board of Directors, or any vice chairman of its Board of
Directors, or its president or any vice president or its treasurer or any
assistant treasurer and (b) by its secretary or any assistant secretary, without
any further action by the Issuer. In authenticating such Securities and Coupons,
if any, and accepting the additional responsibilities under this Indenture in
relation to such Securities and Coupons, if any, the Trustee shall be entitled
to receive, and (subject to Section 6.1) shall be fully protected in relying
upon:

<PAGE>   19

                                       11

                 (1) a copy of any resolution or resolutions of the Board of
         Directors by or pursuant to which the form and term of such series were
         established in each case certified by the Secretary or an Assistant
         Secretary of the Issuer;

                 (2)  an executed supplemental indenture, if any;

                 (3) an Officers' Certificate setting forth the form and terms
         of the Securities and Coupons, if any, as required pursuant to Section
         2.3, and prepared in accordance with Section 11.5;

                 (4)  an Opinion of Counsel, prepared in accordance with
         Section 11.5, which shall state

                          (a) that the form or forms and terms of such
                 Securities and Coupons, if any, have been established by or
                 pursuant to a resolution of the Board of Directors or by a
                 supplemental indenture as permitted by Section 2.1 and 2.3 in
                 conformity with the provisions of this Indenture;

                          (b) that such Securities and Coupons, if any, when
                 authenticated and delivered by the Trustee and issued by the
                 issuer in the manner and subject to any conditions specified in
                 such Opinion of Counsel, will constitute valid and binding
                 obligations of the Issuer;

                          (c) that all laws and requirements in respect of the
                 execution and delivery by the Issuer of the Securities and
                 Coupons, if any, have been complied with; and

                          (d)  such other matters as the Trustee may reasonably
                 request.

         The Trustee shall have the right to decline to authenticate and deliver
any Securities and Coupons, if any, under this Section if the Trustee, being
advised by counsel, determines that such action may not lawfully be taken by the
Issuer or if the Trustee in good faith by its board of directors or board of
trustees, executive committee, or a trust committee of directors, trustees or
Responsible Officers shall determine that such action would expose the Trustee
to personal liability to existing Holders.

         SECTION 2.5 Execution of Securities. The Securities and, if applicable,
each Coupon appertaining thereto, shall be signed on behalf of the Issuer by
both (a) the chairman of its Board of Directors or any vice chairman of its
Board of Directors or its president or any vice president or its treasurer or
any assistant treasurer and (b) by its secretary or any

<PAGE>   20

                                       12

assistant secretary, under its corporate seal which may, but need not, be
attested. Such signatures may be the manual or facsimile signatures of the
present or any future such officers. The seal of the Issuer may be in the form
of a facsimile thereof and may be impressed, affixed, imprinted or otherwise
reproduced on the Securities. Typographical and other minor errors or defects in
any such reproduction of the seal or any such signature shall not affect the
validity or enforceability of any Security or Coupon that has been duly
authenticated and delivered by the Trustee.

         In case any officer of the Issuer who shall have signed any of the
Securities or Coupons shall cease to be such officer before the Security or
Coupon so signed (or the Security to which the Coupon so signed appertains)
shall be authenticated and delivered by the Trustee or disposed of by the
Issuer, such Security or Coupon nevertheless may be authenticated and delivered
or disposed of as though the person who signed such Security or Coupon had not
ceased to be such officer of the Issuer; and any Security or Coupon may be
signed on behalf of the Issuer by such persons as, at the actual date of the
execution of such Security or Coupon, shall be the proper officers of the
Issuer, although at the date of the execution and delivery of this Indenture any
such person was not such an officer.

         SECTION 2.6 Certificate of Authentication. Only such Securities as
shall bear thereon a certificate of authentication substantially in the form
hereinbefore recited, executed by the Trustee by the manual signature of one of
its authorized signatories, shall be entitled to the benefits of this Indenture
or be valid or obligatory for any purpose. Such certificate by the Trustee upon
any Security executed by the Issuer shall be conclusive evidence that the
Security so authenticated has been duly authenticated and delivered hereunder
and that the holder is entitled to the benefits of this Indenture. No Coupon
shall be entitled to the benefits of this Indenture or shall be valid or
obligatory for any purpose until such certificate by the Trustee shall have
become duly executed on the Security to which such Coupon appertains.

         SECTION 2.7 Denomination and Date of Securities; Payments of Interest.
The Securities shall be issuable as Registered Securities or Unregistered
Securities in such denominations as shall be specified as contemplated by
Section 2.3. In the absence of any such specification with respect to the
Registered Securities of any series, the Registered Securities of such series
shall be issuable in denominations of U.S. $1,000 and any integral multiple
thereof. In the absence of any such specification

<PAGE>   21

                                       13

with respect to the Unregistered Securities, Unregistered Securities shall be
issued in the denomination of U.S. $1,000. The Securities shall be numbered,
lettered, or otherwise distinguished in such manner or in accordance with such
plan as the officers of the Issuer executing the same may determine with the
approval of the Trustee as evidenced by the execution and authentication
thereof.

         Each Registered Security shall be dated the date of its authentication.
Each Unregistered Security shall be dated as provided in the resolution or
resolutions of the Board of Directors of the Issuer or the supplemental
indenture referred to in Section 2.3. The Securities of each series shall bear
interest, if any, from the date, and such interest shall be payable on the
dates, established as contemplated by Section 2.3.

         The person in whose name any Registered Security of any series is
registered at the close of business on any record date applicable to a
particular series with respect to any interest payment date for such series
shall be entitled to receive the interest, if any, payable on such interest
payment date notwithstanding any transfer or exchange of such Registered
Security subsequent to the record date and prior to such interest payment date,
except if and to the extent the Issuer shall default in the payment of the
interest due on such interest payment date for such series, in which case such
defaulted interest shall be paid to the persons in whose names Outstanding
Registered Securities for such series are registered at the close of business on
a subsequent record date (which shall be not less than five Business Days prior
to the date of payment of such defaulted interest) established by notice given
by mail by or on behalf of the Issuer to the holders of Registered Securities
not less than 15 days preceding such subsequent record date. The term "record
date" as used with respect to any interest payment date (except a date for
payment of defaulted interest) shall mean the date specified as such in the
terms of the Registered Securities of any particular series, or, if no such date
is so specified, if such interest payment date is the first day of a calendar
month, the fifteenth day of the next preceding calendar month or, if such
interest payment date is the fifteenth day of a calendar month, the first day of
such calendar month, whether or not such record date is a Business Day.

         Any defaulted interest payable in respect of any Unregistered Security
shall be payable pursuant to such procedures as are satisfactory to the Trustee
and in such manner so that there is no discrimination as between the holders of
Registered Securities and Unregistered Securities

<PAGE>   22

                                       14

of the same series and notice of the payment date therefore shall be given by
the Trustee in the name and at the expense of the Company by publication at
least once in an Authorized Newspaper. In case an Unregistered Security is
surrendered in exchange for a Registered Security after the close of business on
any record date for the payment of defaulted interest and before the opening of
business on the proposed date of payment of such defaulted interest, the Coupon
appertaining to such surrendered Unregistered Security and due for payment on
such proposed date of payment will not be surrendered with such surrendered
Unregistered Security and interest payable on such proposed date of payment will
be made only to the holder of such Coupon on such proposed date.

         SECTION 2.8. Registration, Transfer and Exchange. The Issuer will keep
or cause to be kept at each office or agency to be maintained for the purpose as
provided in Section 3.2 a register or registers for each series of Registered
Securities issued hereunder (collectively, the "Security Register") in which,
subject to such reasonable regulations as it may prescribe, it will register,
and will register the transfer of, or cause the registration of transfer of,
Registered Securities as in this Article provided. Such register shall be in
written form in the English language or in any other form capable of being
converted into such form within a reasonable time. At all reasonable times such
register or registers shall be open for inspection by the Trustee.

         Upon due presentation for registration of transfer of any Registered
Security of any series at any such office or agency to be maintained for the
purpose as provided in Section 3.2, the Issuer shall execute and the Trustee
shall authenticate and deliver in the name of the transferee or transferees a
new Registered Security or Registered Securities of the same series in
authorized denominations for a like aggregate principal amount.

         Unregistered Securities (except for any temporary Unregistered
Securities) and Coupons (except for Coupons attached to any temporary
Unregistered Securities) shall be transferable by delivery.

         Any Registered Security or Registered Securities of any series may be
exchanged for a Registered Security or Registered Securities of the same series
in other authorized denominations, in an equal aggregate principal amount.
Registered Securities of any series to be exchanged shall be surrendered at any
office or agency to be maintained by the Issuer

<PAGE>   23

                                       15

for the purpose as provided in Section 3.2, and the Issuer shall execute and the
Trustee shall authenticate and deliver in exchange therefore the Registered
Security or Registered Securities of the same series which the Securityholder
making the exchange shall be entitled to receive, bearing numbers not
contemporaneously outstanding. If the Securities of any series are issued in
both registered and unregistered form, except as otherwise specified pursuant to
Section 2.3, at the option of the Holder thereof, Unregistered Securities of any
series may be exchanged for Registered Securities of such series, maturity date,
and interest rate of any authorized denominations and of a like aggregate
principal amount, upon surrender of such Unregistered Securities to be exchanged
at the agency of the Issuer that shall be maintained for such purpose in
accordance with Section 3.2, with, in the case of Unregistered Securities that
have Coupons attached, all unmatured Coupons and all matured Coupons in default
thereto appertaining, and upon payment, if the Issuer shall so require, of the
charges hereinafter provided. At the option of the Holder thereof, if
Unregistered Securities of any series, maturity date, interest rate and original
issue date are issued in more than one authorized denomination, except as
otherwise specified pursuant to Section 2.3, such Unregistered Securities may be
exchanged for Unregistered Securities of such series, maturity date, interest
rate and original issue date of other authorized denominations and of a like
aggregate principal amount, upon surrender of such Unregistered Securities to be
exchanged at the agency of the Issuer that shall be maintained for such purpose
in accordance with Section 3.2 or as specified pursuant to Section 2.3, with, in
the case of Unregistered Securities that have Coupons attached, all unmatured
Coupons and all matured Coupons in default thereto appertaining, and upon
payment, if the Issuer shall so require, of the charges hereinafter provided.
Unless otherwise specified pursuant to Section 2.3, Registered Securities of any
series may not be exchanged for Unregistered Securities of such series. Whenever
any Securities, and the Coupons appertaining thereto, if any, are so surrendered
for exchange, the Issuer shall execute, and the Trustee shall authenticate and
deliver, the Securities, and the Coupons appertaining thereto, if any, which the
Holder making the exchange is entitled to receive. Notwithstanding the
foregoing, if an Unregistered Security of any series is surrendered at any such
office or agency in exchange for a Registered Security of the same series after
the close of business at such office or agency on any record date and before the
opening of business at such office or agency on the applicable interest payment
date, such Unregis-

<PAGE>   24

                                       16

tered Security shall be surrendered without the Coupon, if any, relating to such
interest payment date. All Securities and Coupons surrendered upon any exchange
or transfer provided for in this Indenture shall be promptly cancelled and
disposed of by the Trustee and the Trustee will deliver a certificate of
disposition thereof to the Issuer.

         All Registered Securities presented for registration of transfer,
exchange, redemption or payment shall (if so required by the Issuer or the
Trustee) be duly endorsed by, or be accompanied by a written instrument or
instruments of transfer in form satisfactory to the Issuer and the Trustee duly
executed by, the holder or his attorney duly authorized in writing.

         The Issuer may require payment of a sum sufficient to cover any tax or
other governmental charge that may be imposed in connection with any exchange or
registration of transfer of Securities and shall not be required to exchange or
register a transfer of any Securities until such payment is made. No service
charge shall be made for any such transaction.

         The Issuer shall not be required to exchange or register a transfer of
(a) any Securities of any series for a period of 15 days next preceding the
first mailing of notice of redemption of Securities of such series to be
redeemed, or (b) any Securities selected, called or being called for redemption
except, in the case of any Security where public notice has been given that such
Security is to be redeemed in part, the portion thereof not so to be redeemed
and except that an Unregistered Security may be exchanged for a Registered
Security of the same series being called for redemption.

         All Securities issued upon any transfer or exchange of Securities shall
be valid obligations of the Issuer, evidencing the same debt, and entitled to
the same benefits under this Indenture, as the Securities surrendered upon such
transfer or exchange.

         Notwithstanding anything herein or in the terms of any series of
Securities to the contrary, neither the Issuer nor the Trustee (which shall rely
on an Officers' Certificate and an Opinion of Counsel) shall be required to
exchange any Unregistered Security for a Registered Security if such exchange
would result in adverse Federal income tax consequences to the Issuer
(including, without limitation the inability of the Issuer to deduct from its
income, as computed for Federal income tax purposes, the interest payable on the
Unregistered Securities) under then applicable United States Federal income tax
laws.

<PAGE>   25

                                       17

         SECTION 2.9 Mutilated, Defaced, Destroyed, Lost and Stolen Securities.
In case any temporary or definitive Security or any Coupon appertaining to any
Security shall become mutilated, defaced or be destroyed, lost or stolen, the
Issuer in its discretion may execute, and upon the written request of any
officer of the Issuer, the Trustee shall authenticate and deliver, a new
Security of the same series, bearing a number not contemporaneously outstanding,
in exchange and substitution for the mutilated or defaced Security, or in lieu
of and substitution for the Security so destroyed, lost or stolen with Coupons
corresponding to the Coupons appertaining to the Security so mutilated, defaced,
destroyed, lost or stolen, or in exchange or substitution for the Security to
which such mutilated, defaced, destroyed, lost or stolen Coupons appertained,
with Coupons appertaining thereto corresponding to the Coupons so mutilated,
defaced, destroyed, lost or stolen. In every case the applicant for a substitute
Security or Coupon shall furnish to the Issuer and to the Trustee and any agent
of the Issuer or the Trustee such security or indemnity as may be required by
them to indemnify and defend and to save each of them harmless and, in every
case of destruction, loss or theft, evidence to their satisfaction of the
destruction, loss or theft of such Security and of the ownership thereof.

         Upon the issuance of any substitute Security or Coupon, the Issuer may
require the payment of a sum sufficient to cover any tax or other governmental
charge that may be imposed in relation thereto and any other expenses (including
the fees and expenses of the Trustee) connected therewith. In case any Security
or Coupon which has matured or is about to mature or has been called for
redemption in full shall become mutilated or defaced or be destroyed, lost or
stolen, the Issuer may, at its sole discretion, instead of issuing a substitute
Security or Coupon, pay or authorize the payment of the same (without surrender
thereof except in the case of a mutilated or defaced Security or Coupon), if the
applicant for such payment shall furnish to the Issuer and to the Trustee and
any agent of the issuer or the Trustee such security or indemnity as any of them
may require to save each of them harmless, and, in every case of destruction,
loss or theft, the applicant shall also furnish to the Issuer and the Trustee
and any agent of the Issuer or the Trustee evidence to their satisfaction of the
destruction, loss or theft of such Security or Coupon and of the ownership
thereof.

         Every substitute Security or Coupon of any series issued pursuant to
the provisions of this Section by virtue of the fact that any such

<PAGE>   26

                                       18

Security or Coupon is destroyed, lost or stolen shall constitute an additional
contractual obligation of the Issuer, whether or not the destroyed, lost or
stolen Security or Coupon shall be at any time enforceable by anyone and shall
be entitled to all the benefits of (but shall be subject to all the limitations
of rights set forth in) this Indenture equally and proportionately with any and
all other Securities or Coupons of such series duly authenticated and delivered
hereunder. All Securities or Coupons shall be held and owned upon the express
condition that, to the extent permitted by law, the foregoing provisions are
exclusive with respect to the replacement or payment of mutilated, defaced or
destroyed, lost or stolen Securities or Coupons and shall preclude any and all
other rights or remedies notwithstanding any law or statute existing or
hereafter enacted to the contrary with respect to the replacement or payment of
negotiable instruments or other securities without their surrender.

         SECTION 2.10 Cancellation of Securities; Destruction Thereof. All
Securities and Coupons surrendered for payment, redemption, registration of
transfer or exchange, or for credit against any payment in respect of a sinking
or analogous fund, if surrendered to the Issuer or any agent of the Issuer or
the Trustee, shall be delivered to the Trustee for cancellation or, if
surrendered to the Trustee, shall be cancelled by it; and no Securities or
Coupons shall be issued in lieu thereof except as expressly permitted by any of
the provisions of this Indenture. The Trustee shall destroy cancelled Securities
and Coupons held by it and deliver a certificate of destruction to the Issuer.
If the Issuer shall acquire any of the Securities or Coupons, such acquisition
shall not operate as a redemption or satisfaction of the indebtedness
represented by such Securities or Coupons unless and until the same are
delivered to the Trustee for cancellation.

         SECTION 2.11 Temporary Securities. Pending the preparation of
definitive Securities for any series, the Issuer may execute and the Trustee
shall authenticate and deliver temporary Securities for such series (printed,
lithographed, typewritten or otherwise reproduced, in each case in form
satisfactory to the Trustee). Temporary Securities of any series shall be
issuable as Registered Securities without Coupons, or as Unregistered Securities
with or without Coupons attached thereto, of any authorized denomination, and
substantially in the form of the definitive Securities of such series but with
such omissions, insertions and variations as may be appropriate for temporary
Securities, all as may be

<PAGE>   27

                                     19

determined by the Issuer with the concurrence of the Trustee. Temporary
Securities may contain such reference to any provisions of this Indenture as may
be appropriate. Every temporary Security shall be executed by the Issuer and be
authenticated by the Trustee upon the same conditions and in substantially the
same manner, and with like effect, as the definitive Securities. Without
unreasonable delay the Issuer shall execute and shall furnish definitive
Securities of such series and thereupon temporary Securities of such series may
be surrendered in exchange therefore without charge at each office or agency to
be maintained by the Issuer for that purpose pursuant to Section 3.2, and in the
case of Unregistered Securities, together with any unmatured Coupons and any
matured Coupons in default appertaining thereto, at any agency maintained by the
Issuer for such purpose as specified pursuant to Section 2.3, and the Trustee
shall authenticate and deliver in exchange for such temporary Securities of such
series a like aggregate principal amount of definitive Securities of the same
series of authorized denominations. Until so exchanged, the temporary Securities
and any unmatured Coupons appertaining thereto of any series shall be entitled
to the same benefits under this Indenture as definitive Securities and any
unmatured Coupons appertaining thereto of such series. The provisions of this
Section are subject to any restrictions or limitations on the issue and delivery
of temporary Unregistered Securities of any series that may be established
pursuant to Section 2.3 (including any provision that Unregistered Securities of
such series initially be issued in the form of a single global Unregistered
Security to be delivered to a depositary or agency of the Issuer located outside
the United States and the procedures pursuant to which definitive Unregistered
Securities of such series would be issued in exchange for such temporary global
Unregistered Security).

                                  ARTICLE THREE

                             COVENANTS OR THE ISSUER

         SECTION 3.1 Payment of Principal and Interest. The Issuer covenants and
agrees for the benefit of each series of Securities that it will duly and
punctually pay or cause to be paid the principal of, and interest on, each of
the Securities of such series at the place or places, at the respective times
and in the manner provided in such Securities. Except as specified in Section
2.3, the interest on Securities with Coupons attached (together with any
additional amounts payable pursuant to the terms of such Securities) shall be
payable only upon presentation and

<PAGE>   28

                                       20

surrender of the several Coupons for such interest installments as are evidenced
thereby as they severally mature. Except as specified in Section 2.3, the
interest on any temporary Unregistered Securities (together with any additional
amounts payable pursuant to the terms of such Securities) shall be paid, as to
the installments of interest evidenced by Coupons attached thereto, if any, only
upon presentation and surrender thereof, and, as to the other installments of
interest, if any, only upon presentation of such Securities for notation thereon
of the payment of such interest. Each installment of interest on the Registered
Securities of any series may be paid by mailing checks for such interest payable
to or upon the written order of the holders of Registered Securities entitled
thereto as they shall appear on the registry books of the Issuer.

         SECTION 3.2 Offices for Payments, etc. So long as any of the Securities
remain outstanding, the Issuer will maintain the following for each series: an
office or agency (a) where the Registered Securities may be presented for
payment, (b) where the Registered Securities may be presented for registration
of transfer and for exchange as in this Indenture provided and (c) where notices
and demands to or upon the Issuer in respect of the Registered Securities or of
this Indenture may be served.

         The Issuer will maintain one or more agencies in a city or cities
located outside the United States (including any city in which such an agency is
required to be maintained under the rules of any stock exchange on which the
Securities of such series are listed) where the Unregistered Securities, if any,
of each series and Coupons, if any, appertaining thereto may be presented for
payment. No payment on any Unregistered Security or Coupon will be made upon
presentation of such Unregistered Security or Coupon at an agency of the Issuer
within the United States nor will any payment be made by transfer to an account
in, or by mail to an address in, the United States unless pursuant to applicable
United States laws and regulations then in effect such payment can be made
without adverse tax consequences to the Issuer. Notwithstanding the foregoing,
payments in U.S. dollars on Unregistered Securities of any series and Coupons
appertaining thereto which are denominated in U.S. dollars may be made at an
agency of the Issuer maintained in the Borough of Manhattan, The City of New
York if such payment in U.S. dollars at each agency maintained by the Issuer
outside the United States for payment on such Unregistered Securities is illegal
or effectively precluded by exchange controls or other similar restrictions.

<PAGE>   29

                                       21

         The Issuer will give to the Trustee written notice of the location of
any such office or agency and of any change of location thereof. With respect to
each series of Securities and Coupons whose terms are established pursuant to
Section 2.3, the Issuer hereby designates the Corporate Trust Office as the
initial office to be maintained by it for each such purpose. In case the Issuer
shall fail to so designate or maintain any such office or agency or shall fail
to give such notice of the location or of any change in the location thereof,
presentations and demands may be made and notices may be served at the Corporate
Trust Office.

         SECTION 3.3 Appointment to Fill a Vacancy in Office of Trustee. The
Issuer, whenever necessary to avoid or fill a vacancy in the office of Trustee,
will appoint, in the manner provided in Section 6.10, a Trustee, so that there
shall at all times be a Trustee with respect to each series of Securities
hereunder.

         SECTION 3.4 Paying Agents. Whenever the Issuer shall appoint a paying
agent other than the Trustee with respect to the Securities of any series, it
will cause such paying agent to execute and deliver to the Trustee an instrument
in which such agent shall agree with the Trustee, subject to the provisions of
this Section,

                 (a) that it will hold all sums received by it as such agent for
         the payment of the principal of or interest on the Securities of such
         series (whether such sums have been paid to it by the Issuer or by any
         other obligor on the Securities of such series) in trust for the
         benefit of the holders of the Securities of such series or the Coupons
         appertaining thereto or of the Trustee, and

                 (b) that it will give the Trustee notice of any failure by the
         Issuer (or by any other obligor on the Securities of such series) to
         make any payment of the principal of or interest on the Securities of
         such series when the same shall be due and payable.

         The Issuer will, on or prior to each due date of the principal of or
interest on the Securities of such series, deposit with the paying agent a sum
sufficient to pay such principal or interest so becoming due, and (unless such
paying agent is the Trustee) the Issuer will promptly notify the Trustee of any
failure to take such action.

         If the Issuer shall act as its own paying agent with respect to the
Securities or the Coupons appertaining thereto of any series, it will, on

<PAGE>   30

                                       22

or before each due date of the principal of or interest on the Securities or the
Coupons appertaining thereto of such series, set aside, segregate and hold in
trust for the benefit of the holders of the Securities or the Coupons
appertaining thereto of such series a sum sufficient to pay such principal or
interest so becoming due. The Issuer will promptly notify the Trustee of any
failure to take such action.

         Anything in this Section to the contrary notwithstanding, the Issuer
may at any time, for the purpose of obtaining a satisfaction and discharge with
respect to one or more or all series of Securities hereunder, or for any other
reason, pay or cause to be paid to the Trustee all sums held in trust for any
such series by the Issuer or any paying agent hereunder, as required by this
Section, such sums to be held by the Trustee upon the trusts herein contained.

         Anything in this Section to the contrary notwithstanding, the agreement
to hold sums in trust as provided in this Section is subject to the provisions
of Sections 10.3 and 10.4.

         SECTION 3.5 Written Statement to Trustee. The Issuer will deliver to
the Trustee on or before April 30 in each year (beginning with April 30, 1989) a
written statement, signed by two of its officers (which need not comply with
Section 11.5), stating that in the course of the performance of their duties as
officers of the Issuer they would normally have knowledge of any default by the
Issuer in the performance or fulfillment of any covenant, agreement or condition
contained in this Indenture, stating whether or not they have knowledge of any
such default and, if so, specifying each such default of which the signers have
knowledge and the nature thereof.

         SECTION 3.6 Luxembourg Publications. In the event of the publication of
any notice pursuant to Section 5.11, 6.10(a), 6.11, 8.2, 10.4 or 12.2, the party
making such publication in London shall also, to the extent that notice is
required to be given to Holders of Securities of any series by applicable
Luxembourg law or stock exchange regulation, as evidenced by an Officers'
Certificate delivered to such party, make a similar publication in Luxembourg.

<PAGE>   31

                                       23

                                  ARTICLE FOUR

                    SECURITYHOLDERS' LISTS AND REPORTS BY THE
                             ISSUER AND THE TRUSTEE

         SECTION 4.1 Issuer to Furnish Trustee Information as to Names and
Addresses of Securityholders. The Issuer covenants and agrees that it will
furnish or cause to be furnished to the Trustee a list in such form as the
Trustee may reasonably require of the names and addresses of the holders of the
Securities of each series:

                 (a) semiannually and not more that 15 days after each record
         date for the payment of interest on such Securities, as hereinabove
         specified, as of such record date and on dates to be determined
         pursuant to Section 2.3 for not-interest bearing securities in each
         year, and

                 (b) at such other times as the Trustee may request in writing,
         within 30 days after receipt by the Issuer of any such request as of a
         date not more than 15 days prior to the time such information is
         furnished,

provided that if and so long as the Trustee shall be the Security registrar for
such series and all of the Securities of such series are Registered Securities,
such list shall not be required to be furnished. The Trustee shall, at the
request of the Issuer, provide such list to the Issuer for so long as the
Trustee shall be the Security registrar.

         SECTION 4.2 Preservation and Disclosure of Securityholders' Lists. (a)
The Trustee shall preserve, in as current a form as is reasonably practicable,
all information as to the names and addresses of the holders of each series of
Securities (i) contained in the most recent list furnished to it as provided in
Section 4.1, (ii) received by it in the capacity of Security registrar for such
series, if so acting and (iii) filed with it within the preceding two years
pursuant to Section 4.4(c)(ii). The Trustee may destroy any list furnished to it
as provided in Section 4.1 upon receipt of a new list so furnished.

                 (b) In case three or more holders of Securities (hereinafter
         referred to as "applicants") apply in writing to the Trustee and
         furnish to the Trustee reasonable proof that each such applicant has
         owned a Security for a period of at least six months preceding the date
         of such application, and such application states that the applicants
         desire to communicate with other holders of Securities of a particular
         series (in which case the applicants must all hold Securities of such
         series) or with Holders of all

<PAGE>   32

                                       24

         Securities with respect to their rights under this Indenture or under
         such Securities and such application is accompanied by a copy of the
         form of proxy or other communication which such applicants propose to
         transmit, then the Trustee shall, within five Business Days after the
         receipt of such application, at its election, either

                          (i) afford to such applicants access to the
                 information preserved at the time by the Trustee in accordance
                 with the provisions of subsection (a) of this Section, or

                          (ii) inform such applicants as to the approximate
                 number of holders of Securities of such series or all
                 Securities, as the case may be, whose names and addresses
                 appear in the information preserved at the time by the Trustee,
                 in accordance with the provisions of subsection (a) of this
                 Section, and as to the approximate cost of mailing to such
                 Securityholders the form of proxy or other communication, if
                 any, specified in such application.

         If the Trustee shall elect not to afford to such applicants access to
such information, the Trustee shall, upon the written request of such
applicants, mail to each Securityholder of such series or all Securities, as the
case may be, whose name and address appears in the information preserved at the
time by the Trustee in accordance with the provisions of subsection (a) of this
Section a copy of the form of proxy or other communication which is specified in
such request, with reasonable promptness after a tender to the Trustee of the
material to be mailed and of payment, or provision for the payment, of the
reasonable expenses of mailing, unless within five days after such tender, the
Trustee shall mail to such applicants and file with the Commission together with
a copy of the material to be mailed, a written statement to the effect that, in
the opinion of the Trustee, such mailing would be contrary to the best interests
of the holders of Securities of such series or all Securities, as the case may
be, or would be in violation of applicable law. Such written statement shall
specify the basis of such opinion. If the Commission, after opportunity for a
hearing upon the objections specified in the written statement so filed, shall
enter an order refusing to sustain any of such objections or if, after the entry
of an order sustaining one or more of such objections, the Commission shall
find, after notice and opportunity for hearing, that all the objections so
sustained have been met, and shall enter an order so declaring, the Trustee
shall mail copies of such material to all such Securityholders with reasonable
promptness after the entry of such order and the renewal of such tender;
otherwise the Trustee shall

<PAGE>   33

                                       25

be relieved of any obligation or duty to such applicants respecting their
application.

                 (c) Each and every holder of Securities and Coupons, by
         receiving and holding the same, agrees with the Issuer and the Trustee
         that neither the Issuer nor the Trustee nor any agent of the Issuer or
         the Trustee shall be held accountable by reason of the disclosure of
         any such information as to the names and addresses of the holders of
         Securities in accordance with the provisions of subsection (b) of this
         Section, regardless of the source from which such information was
         derived, and that the Trustee shall not be held accountable by reason
         of mailing any material pursuant to a request made under such
         subsection (b).

         SECTION 4.3 Reports by the Issuer. The Issuer covenants:

                 (a) to file with the Trustee, within 15 days after the Issuer
         is required to file the same with the Commission, copies of the annual
         reports and of the information, documents, any other reports (or copies
         of such portions of any of the foregoing as the Commission may from
         time to time by rules and regulations prescribe) which the Issuer may
         be required to file with the Commission pursuant to Section 13 or
         Section 15(d) of the Securities Exchange Act of 1934, if the Issuer is
         not required to file information, documents, or reports pursuant to
         either of such Sections, then to file with the Trustee and the
         Commission, in accordance with rules and regulations prescribed from
         time to time by the Commission, such of the supplementary and periodic
         information, documents, and reports which may be required pursuant to
         Section 13 of the Securities Exchange Act of 1934, or in respect of a
         security listed and registered on a national securities exchange as may
         be prescribed from time to time in such rules and regulations;

                 (b) to file with the Trustee and the Commission, in accordance
         with rules and regulations prescribed from time to time by the
         Commission, such additional information, documents, and reports with
         respect to compliance by the Issuer with the conditions and covenants
         provided for in this Indenture as may be required from time to time by
         such rules and regulations; and

                 (c) to transmit by mail to the holders of Securities. within 30
         days after the filing thereof with the Trustee, such summaries of any
         information, documents and reports required to be filed by the Issuer
         pursuant to subsections (a) and (b) of this Section as may be required

<PAGE>   34

                                       26

         to be transmitted to such Holders by rules and regulations prescribed
         from time to time by the Commission.

         SECTION 4.4 Reports by the Trustee. (a) On or before July 15 in each
year following the date hereof, so long as any Securities are Outstanding
hereunder, the Trustee shall transmit by mail as provided below to the
Securityholders of each series, as hereinafter in this Section provided, a brief
report dated as of the preceding May 15 with respect to:

                          (i) its eligibility under Section 6.9 and its
                 qualification under Section 6.8, or in lieu thereof, if to the
                 best of its knowledge it has continued to be eligible and
                 qualified under such Sections, a written statement to such
                 effect;

                          (ii) the character and amount of any advances (and if
                 the Trustee elects so to state, the circumstances surrounding
                 the making thereof) made by the Trustee (as such) which remain
                 unpaid on the date of such report and for the reimbursement of
                 which it claims or may claim a lien or charge, prior to that of
                 the Securities of any series, on any property or funds held or
                 collected by it as Trustee, except that the Trustee shall not
                 be required (but may elect) to report such advances if such
                 advances so remaining unpaid aggregate not more than 1/2 of 1%
                 of the principal amount of the securities of any series
                 Outstanding on the date of such report;

                          (iii) the amount, interest rate, and maturity date of
                 all other indebtedness owing by the Issuer (or by any other
                 obligor on the Securities) to the Trustee in its individual
                 capacity on the date of such report, with a brief description
                 of any property held as collateral security therefore, except
                 any indebtedness based upon a creditor relationship arising in
                 any manner described in Section 6.13(b)(2), (3), (4) or (6);

                          (iv) the property and funds, if any, physically in
                 the possession of the Trustee (as such) on the date of such
                 report;

                          (v)  any additional issue of Securities which the
                 Trustee has not previously reported; and

                          (vi) any action taken by the Trustee in the
                 performance of its duties under this Indenture which it has not
                 previously reported and which in its opinion materially affects
                 the Securities, except action in respect of a default, notice
                 of which has been or is to be withheld by it in accordance with
                 the provisions of Section 5.11.

<PAGE>   35

                                       27

                 (b) The Trustee shall transmit to the Securityholders of each
         series, as provided in subsection (c) of this Section, a brief report
         with respect to the character and amount of any advances (and if the
         Trustee elects so to state, the circumstances surrounding the making
         thereof) made by the Trustee, as such, since the date of the last
         report transmitted pursuant to the provisions of subsection (a) of this
         Section (or if no such report has yet been so transmitted, since the
         date of this Indenture) for the reimbursement of which it claims or may
         claim a lien or charge prior to that of the Securities of such series
         on property or funds held or collected by it as Trustee and which it
         has not previously reported pursuant to this subsection (b), except
         that the Trustee shall not be required (but may elect) to report such
         advances if such advances remaining unpaid at any time aggregate 10% or
         less of the principal amount of Securities of such series outstanding
         at such time, such report to be transmitted within 90 days after such
         time.

                 (c) Reports pursuant to this Section shall be transmitted by
         mail:

                          (i)  to all registered Holders of Securities, as the
                 names and addresses of such Holders appear upon the registry
                 books of the Issuer;

                          (ii) to such other Holders of Securities as have,
                 within two years preceding such transmission, filed their names
                 and addresses with the Trustee for that purpose; and

                          (iii) except in the case of reports pursuant to
                 subsection (b), to each Holder of a Security whose name and
                 address are preserved at the time by the Trustee as provided in
                 Section 4.2(a).

                 (d) A copy of each such report shall, at the time of such
         transmission to Securityholders, be furnished to the Issuer and be
         filed by the Trustee with each stock exchange upon which the Securities
         of any applicable series are listed and also with the Commission. The
         Issuer agrees to notify the Trustee with respect to any series when and
         as the Securities of such series become admitted to trading on any
         national securities exchange.

<PAGE>   36

                                       28

                                  ARTICLE FIVE

                  REMEDIES OR THE TRUSTEE AND SECURITYHOLDERS
                               ON EVENT OF DEFAULT

         SECTION 5.1 Event of Default Defined; Acceleration of Maturity; Waiver
of Default. "Event of Default with respect to Securities of any series wherever
used herein, means each one of the following events which shall have occurred
and be continuing (whatever the reason for such Event of Default and whether it
shall be voluntary or involuntary or be effected by operation of law or pursuant
to any judgment, decree or order of any court or any order, rule or regulation
of any administrative or governmental body):

                 (a) default in the payment of any installment of interest upon
         any of the Securities of such series as and when the same shall become
         due and payable, and continuance of such default for a period of 30
         days; or

                 (b) default in the payment of all or any part of the principal
         on any of the Securities of such series as and when the same shall
         become due and payable either at maturity, upon redemption, by
         declaration or otherwise; or

                 (c) default in the payment of any sinking fund installment as
         and when the same shall become due and payable by the terms of the
         Securities of such series; or

                 (d) default in the performance, or breach, of any covenant or
         warranty of the Issuer in respect of the Securities of such series
         (other than a covenant or warranty in respect of the Securities of such
         series a default in whose performance or whose breach is elsewhere in
         this Section specifically dealt with), and continuance of such default
         or breach for a period of 90 days after there has been given, by
         registered or certified mail, to the Issuer by the Trustee or to the
         Issuer and the Trustee by the Holders of at least 25% in principal
         amount of the Outstanding Securities of all series affected thereby, a
         written notice specifying such default or breach and requiring it to be
         remedied and stating that such notice is a "Notice of Default"
         hereunder; or

                 (e) a court having jurisdiction in the premises shall enter a
         decree or order for relief in respect of the Issuer in all involuntary
         case under any applicable bankruptcy, insolvency or other similar law
         now or hereafter in effect, or appointing a receiver, liquidator,
         assignee, custodian, trustee or sequestrator (or similar official) of
         the

<PAGE>   37

                                       29

         Issuer or for any substantial part of its property or ordering the
         winding up or liquidation of its affairs, and such decree or order
         shall remain unstayed and in effect for a period of 90 consecutive
         days; or

                 (f) the Issuer shall commence a voluntary case under any
         applicable bankruptcy, insolvency or other similar law now or hereafter
         in effect, or consent to the entry of an order for relief in an
         involuntary case under any such law, or consent to the appointment of
         or taking possession by a receiver, liquidator, assignee, custodian,
         trustee or sequestrator (or similar official) of the Issuer or for any
         substantial part of its property, or make any general assignment for
         the benefit of creditors; or

                 (g) any other Event of Default provided in the supplemental
         indenture or resolution of the Board of Directors under which such
         series of Securities is issued or in the form of Security for such
         series.

If an Event of Default described in clauses (a), (b), (c) or (d) above (if the
Event of Default under clause (d) is with respect to less than all series of
Securities then Outstanding) occurs and is continuing, then, and in each and
every such case, unless the principal of all of the Securities of such series
shall have already become due and payable, either the Trustee or the holders of
not less than 25% in aggregate principal amount of the Securities of such series
then Outstanding hereunder (each such series voting as a separate class) by
notice in writing to the Issuer (and to the Trustee if given by
Securityholders), may declare the entire principal (or, if the Securities of
such series are Original Issue Discount Securities, such portion of the
principal amount as may be specified in the terms of such series) of all
Securities of such series and the interest accrued thereon, if any, to be due
and payable immediately, and upon any such declaration the same shall become
immediately due and payable. If an Event of Default described in clause (d) (if
the Event of Default under clause (d) is with respect to all series of
Securities then Outstanding), (e) or (f) occurs and is continuing, then and in
each and every such case, unless the principal of all the Securities shall have
already become due and payable, either the Trustee or the Holders of not less
than 25% in

<PAGE>   38

                                       30

aggregate principal amount of all the Securities then Outstanding hereunder
(treated as one class), by notice in writing to the Issuer (and to the Trustee
if given by Securityholders), may declare the entire principal (or, if any
Securities are Original Issue Discount Securities, such portion of the principal
as may be specified in the terms thereof) of all the Securities then Outstanding
and interest accrued thereon, if any, to be due and payable immediately, and
upon any such declaration the same shall become immediately due and payable.

         The foregoing provisions, however, are subject to the condition that
if, at any time after the principal (or, if the Securities are Original Issue
Discount Securities, such portion of the principal as may be specified in the
terms thereof) of the Securities of any series (or of all the Securities, as the
case may be) shall have been so declared due and payable, and before any
judgment or decree for the payment of the moneys due shall have been obtained or
entered as hereinafter provided, the Issuer shall pay or shall deposit with the
Trustee a sum sufficient to pay all matured installments of interest upon all
the Securities of such series (or of all the Securities, as the case may be) and
the principal of any and all Securities of such series (or of all the
Securities, as the case may be) which shall have become due otherwise than by
acceleration (with interest upon such principal and, to the extent that payment
of such interest is enforceable under applicable law, on overdue installments of
interest, at the same rate as the rate of interest or Yield to Maturity (in the
case of Original Issue Discount Securities) specified in the Securities of such
series (or at the respective rates of interest or Yields to Maturity of all the
Securities, as the case may be, to the date of such payment or deposit) and such
amount as shall be sufficient to cover reasonable compensation to the Trustee,
its agents, attorneys and counsel, and all other expenses and liabilities
incurred, and all advances made, by the Trustee except as a result of negligence
or bad faith, and all other amounts due to the Trustee or any predecessor
Trustee pursuant to Section 6.6, and if any and all Events of Default under the
Indenture, other than the non-payment of the principal of Securities which shall
have become due by acceleration, shall have been cured, waived or otherwise
remedied as provided herein---then and in every such case the holders of a
majority in aggregate principal amount of all the Securities of such series,
each series voting as a separate class (or of all the Securities, as the case
may be, voting as a single class) then outstanding, by written notice to the
Issuer and to the Trustee, may waive all defaults with respect to such series
(or with respect to all the

<PAGE>   39

                                       31

Securities, as the case may be) and rescind and annul such declaration and its
consequences, but no such waiver or rescission and annulment shall extend to or
shall affect any subsequent default or shall impair any right consequent
thereon.

         For all purposes under this Indenture, if a portion of the principal of
any Original Issue Discount Securities shall have been accelerated and declared
due and payable pursuant to the provisions hereof, then, from and after such
declaration, unless such declaration has been rescinded and annulled, the
principal amount of such Original Issue Discount Securities shall be deemed, for
all purposes hereunder, to be such portion of the principal thereof as shall be
due and payable as a result of such acceleration, and payment of such portion of
the principal thereof as shall be due and payable as a result of such
acceleration, together with interest, if any, thereon and all other amounts
owing thereunder, shall constitute payment in full of such Original Issue
Discount Securities.

         SECTION 5.2 Collection of Indebtedness by Trustee; Trustee May Prove
Debt. The Issuer covenants that (a) in case default shall be made in the payment
of any installment of interest on any of the Securities of any series when such
interest shall have become due and payable, and such default shall have
continued for a period of 30 days or (b) in case default shall be made in the
payment of all or any part of the principal of any of the Securities of any
series when the same shall have become due and payable, whether upon maturity of
the Securities of such series or upon any redemption or by declaration or
otherwise--then upon demand of the Trustee, the Issuer will pay to the Trustee
for the benefit of the Holders of the Securities of such series the whole amount
that then shall have become due and payable on all Securities of such series,
and Coupons appertaining thereto, for principal or interest, as the case may be
(with interest to the date of such payment upon the overdue principal and, to
the extent that payment of such interest is enforceable under applicable law, on
overdue installments of interest at the same rate as the rate of interest or
Yield to Maturity (in the case of Original Issue Discount Securities) specified
in the Securities of such series); and in addition thereto, such further amount
as shall be sufficient to cover the costs and expenses of collection, including
reasonable compensation to the Trustee and each predecessor Trustee, their
respective agents, attorneys and counsel, and any expenses and liabilities
incurred, and all advances made, by the Trustee and each predecessor Trustee
except as a result of its negligence or bad faith, and all other amounts due to
the Trustee or any predecessor Trustee pursuant to Section 6.6.

<PAGE>   40

                                       32

         Until such demand is made by the Trustee, the Issuer may pay the
principal of and interest on the Securities of any series to the holders,
whether or not the principal of and interest on the Securities of such series be
overdue.

         In case the Issuer shall fail forthwith to pay such amounts upon such
demand, the Trustee, in its own name and as trustee of an express trust, shall
be entitled and empowered to institute any action or proceedings at law or in
equity for the collection of the sums so due and unpaid, and may prosecute any
such action or proceedings to judgment or final decree, and may enforce any such
judgment or final decree against the Issuer or other obligor upon such
Securities and collect in the manner provided by law out of the property of the
Issuer or other obligor upon such Securities, wherever situated, the moneys
adjudged or decreed to be payable.

         In case there shall be pending proceedings relative to the Issuer or
any other obligor upon the Securities under Title 11 of the United States Code
or any other applicable Federal or state bankruptcy, insolvency or other similar
law, or in case a receiver, assignee or trustee in bankruptcy or reorganization,
liquidator, sequestrator or similar official shall have been appointed for or
taken possession of the Issuer or its property or such other obligor, or in case
of any other comparable judicial proceedings relative to the Issuer or other
obligor upon the Securities of any series, or Coupons appertaining thereto, or
to the creditors or property of the Issuer or such other obligor, the Trustee,
irrespective of whether the principal of any Securities shall then be due and
payable as therein expressed or by declaration or otherwise and irrespective of
whether the Trustee shall have made any demand pursuant to the provisions of
this Section, shall be entitled and empowered, by intervention in such
proceedings or otherwise:

                 (a) to file and prove a claim or claims for the whole amount of
         principal and interest (or, if the Securities of any series are
         Original Issue Discount Securities, such portion of the principal
         amount as may be specified in the terms of such series) owing and
         unpaid in respect of the Securities of any series, and to file such
         other papers or documents as may be necessary or advisable in order to
         have the claims of the Trustee (including any claim for reasonable
         compensation to the Trustee and each predecessor Trustee, and their
         respective agents, attorneys and counsel, and for reimbursement of all
         expenses and liabilities incurred, and all advances made, by the
         Trustee and

<PAGE>   41

                                       33

         each predecessor Trustee, except as a result of negligence or bad
         faith, and all other amounts due to the Trustee or any predecessor
         Trustee pursuant to Section 6.6) and of the Securityholders allowed in
         any judicial proceedings relative to the Issuer or other obligor upon
         the Securities of any series, or to the creditors or property of the
         Issuer or such other obligor,

                 (b) unless prohibited by applicable law and regulations, to
         vote on behalf of the holders of the Securities of any series in any
         election of a trustee or a standby trustee in arrangement,
         reorganization, liquidation or other bankruptcy or insolvency
         proceedings or person performing similar functions in comparable
         proceedings, and

                 (c) to collect and receive any moneys or other property payable
         or deliverable on any such claims, and to distribute all amounts
         received with respect to the claims of the Securityholders and of the
         Trustee on their behalf; and any trustee, receiver, or liquidator,
         custodian or other similar official is hereby authorized by each of the
         Securityholders to make payments to the Trustee, and, in the event that
         the Trustee shall consent to the making of payments directly to the
         Securityholders, to pay to the Trustee such amounts as shall be
         sufficient to cover reasonable compensation to the Trustee, each
         predecessor Trustee and their respective agents, attorneys and counsel,
         and all other expenses and liabilities incurred, and all advances made,
         by the Trustee and each predecessor Trustee except as a result of
         negligence or bad faith and all other amounts due to the Trustee or any
         predecessor Trustee pursuant to Section 6.6.

         Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or vote for or accept or adopt on behalf of any
Securityholder any plan or reorganization, arrangement, adjustment or
composition affecting the Securities or Coupons appertaining thereto of any
series or the rights of any Holder thereof, or to authorize the Trustee to vote
in respect of the claim of any Securityholder in any such proceeding except, as
aforesaid, to vote for the election of a trustee in bankruptcy or similar
person.

         All rights of action and of asserting claims under this Indenture, or
under any of the Securities, or Coupons appertaining thereto may be enforced by
the Trustee without the possession of any of the Securities, or Coupons
appertaining thereto, or the production thereof on any trial or other
proceedings relative thereto, and any such action or proceedings

<PAGE>   42

                                       34

instituted by the Trustee shall be brought in its own name as trustee of an
express trust, and any recovery of judgment, subject to the payment of the
expenses, disbursements, compensation and all other amounts due pursuant to
Section 6.6 to the Trustee, each predecessor Trustee and their respective agents
and attorneys, shall be for the ratable benefit of the holders of the
Securities, or Coupons appertaining thereto, in respect of which such action was
taken.

         In any proceedings brought by the Trustee (and also any proceedings
involving the interpretation of any provision of this Indenture to which the
Trustee shall be a party) the Trustee shall be held to represent all the holders
of the Securities in respect to which such action was taken, and it shall not be
necessary to make any holders of such Securities parties to any such
proceedings.

         SECTION 5.3 Application of Proceeds. Any moneys collected by the
Trustee pursuant to this Article in respect of any series shall be applied in
the following order at the date or dates fixed by the Trustee and, in case of
the distribution of such moneys on account of principal or interest, upon
presentation of the several Securities, and Coupons appertaining thereto, in
respect of which monies have been collected and stamping (or otherwise noting)
thereon the payment, or issuing Securities of such series in reduced principal
amounts in exchange for the presented Securities of like series if only
partially paid, or upon surrender thereof if fully paid:

                 FIRST: To the payment of costs and expenses applicable to such
         series in respect of which monies have been collected, including
         reasonable compensation to the Trustee and each predecessor Trustee and
         their respective agents and attorneys and of all expenses and
         liabilities incurred, and all advances made, by the Trustee and each
         predecessor Trustee except as a result of negligence or bad faith, and
         all other amounts due to the Trustee or any predecessor Trustee
         pursuant to Section 6.6;

                 SECOND:  To the Holders of Senior Indebtedness to the extent
         required by Article 13;

                 THIRD: In case the principal of the Securities of such series
         in respect of which moneys have been collected shall not have become
         and be then due and payable, to the payment of interest on the
         Securities of such series in default in the order of the maturity of
         the installments of such interest, with interest (to the extent that
         such

<PAGE>   43

                                       35

         interest has been collected by the Trustee) upon the overdue
         installments of interest at the same rate as the rate of interest or
         Yield to Maturity (in the case of Original Issue Discount Securities)
         specified in such Securities, such payments to be made ratably to the
         persons entitled thereto, without discrimination or preference;

                 FOURTH: In case the principal of the Securities of such series
         in respect of which moneys have been collected shall have become and
         shall be then due and payable, to the payment of the whole amount then
         owing and unpaid upon all the Securities of such series for principal
         and interest, with interest upon the overdue principal, and (to the
         extent that such interest has been collected by the Trustee) upon
         overdue installments of interest at the same rate as the rate of
         interest or Yield to Maturity (in the case of Original Issue Discount
         Securities) specified in the Securities of such series; and in case
         such moneys shall be insufficient to pay in full the whole amount so
         due and unpaid upon the Securities of such series, then to the payment
         of such principal and interest or yield to maturity, without preference
         or priority of principal over interest or yield to maturity, or of
         interest or yield to maturity over principal, or of any installment of
         interest over any other installment of interest, or of any Security of
         such series over any other Security of such series, ratably to the
         aggregate of such principal and accrued and unpaid interest or yield to
         maturity; and

                 FIFTH:  To the payment of the remainder, if any, to the Issuer
         or any other person lawfully entitled thereto.

         SECTION 5.4 Suits for Enforcement. In case an Event of Default has
occurred, has not been waived and is continuing, the Trustee may in its
discretion proceed to protect and enforce the rights vested in it by this
Indenture by such appropriate judicial proceedings as the Trustee shall deem
most effectual to protect and enforce any of such rights, either at law or in
equity or in bankruptcy or otherwise, whether for the specific enforcement of
any covenant or agreement contained in this Indenture or in aid of the exercise
of any power granted in this Indenture or to enforce any other legal or
equitable right vested in the Trustee by this Indenture or by law.

         SECTION 5.5 Restoration of Rights on Abandonment of Proceedings. In
case the Trustee shall have proceeded to enforce any right under this Indenture
and such proceedings shall have been discontinued

<PAGE>   44

                                       36

or abandoned for any reason, or shall have been determined adversely to the
Trustee, then and in every such case the Issuer and the Trustee shall be
restored respectively to their former positions and rights hereunder, and all
rights, remedies and powers of the Issuer, the Trustee and the Securityholders
shall continue as though no such proceedings had been taken.

         SECTION 5.6 Limitations on Suits by Securityholders. No holder of any
Security of any series or of any Coupon appertaining thereto shall have any
right by virtue or by availing of any provision of this Indenture to institute
any action or proceeding at law or in equity or in bankruptcy or otherwise upon
or under or with respect to this Indenture, or for the appointment of a trustee,
receiver, liquidator, custodian or other similar official or for any other
remedy hereunder, unless such holder previously shall have given to the Trustee
written notice of default and of the continuance thereof, as hereinbefore
provided, and unless also the holders of not less than 25% in aggregate
principal amount of the Securities of such series then outstanding shall have
made written request upon the Trustee to institute such action or proceedings in
its own name as trustee hereunder and shall have offered to the Trustee such
reasonable indemnity as it may require against the costs, expenses and
liabilities to be incurred therein or thereby and the Trustee for 60 days after
its receipt of such notice, request and offer of indemnity shall have failed to
institute any such action or proceeding and no direction inconsistent with such
written request shall have been given to the Trustee pursuant to Section 5.9; it
being understood and intended, and being expressly covenanted by the taker and
Holder of every Security or Coupon with every other taker and Holder and the
Trustee, that no one or more Holders of Securities of any series or of any
Coupon appertaining thereto shall have any right in any manner whatever by
virtue or by availing of any provision of this Indenture to affect, disturb or
prejudice the rights of any other such Holder of Securities or Coupons, or to
obtain or seek to obtain priority over or preference to any other such Holder or
to enforce any right under this Indenture, except in the manner herein provided
and for the equal, ratable and common benefit of all Holders of Securities of
the applicable series or of any Coupon appertaining thereto. For the protection
and enforcement of the provisions of this Section, each and every Securityholder
and the Trustee shall be entitled to such relief as can be given either at law
or in equity.

<PAGE>   45

                                       37

         SECTION 5.7 Unconditional Rights of Securityholders to Institute
Certain Suits. Notwithstanding any other provision in this Indenture and any
provision of any Security, the right of any holder of any Security or Coupon to
receive payment of the principal of an interest on such Security or Coupon on or
after the respective due dates expressed in such Security or Coupon, or in any
Coupon appertaining thereto, or to institute suit for the enforcement of any
such payment on or after such respective dates, shall not be impaired or
affected without the consent of such Holder.

         SECTION 5.8 Powers and Remedies Cumulative; Delay or Omission Not
Waiver of Default. Except as provided in Section 2.9, no right or remedy herein
conferred upon or reserved to the Trustee or to the Securityholders is intended
to be exclusive of any other right or remedy, and every right and remedy shall,
to the extent permitted by law, be cumulative and in addition to every other
right and remedy given hereunder or now or hereafter existing at law or in
equity or otherwise. The assertion or employment of any right or remedy
hereunder, or otherwise, shall not prevent the concurrent assertion or
employment of any other appropriate right or remedy.

         No delay or omission of the Trustee or of any Securityholder to
exercise any right or power accruing upon any Event of Default occurring and
continuing as aforesaid shall impair any such right or power or shall be
construed to be a waiver of any such Event of Default or an acquiescence
therein; and, subject to Section 5.6, every power and remedy given by this
Indenture or by law to the Trustee or to the Securityholders may be exercised
from time to time, and as often as shall be deemed expedient, by the Trustee or
by the Securityholders.

         SECTION 5.9 Control by Securityholders. The Holders of a majority in
aggregate principal amount of the Securities of each series affected (with each
series voting as a separate class) at the time outstanding shall have the right
to direct the time, method, and place of conducting any proceeding for any
remedy available to the Trustee, or exercising any trust or power conferred on
the Trustee with respect to the Securities of such series by this Indenture;
provided that such direction shall not be otherwise than in accordance with law
and the provisions of this Indenture and provided further that (subject to the
provisions of Section 6.1) the Trustee shall have the right to decline to follow
any such direction if the Trustee, being advised by counsel shall determine that
the action or proceeding so directed may not lawfully be

<PAGE>   46

                                       38

taken or if the Trustee in good faith by its board of directors, the executive
committee, or a trust committee of directors or Responsible Officers of the
Trustee shall determine that the action or proceedings so directed would involve
the Trustee in personal liability or if the Trustee in good faith shall so
determine that the actions or forebearances specified in or pursuant to such
direction would be unduly prejudicial to the interests of Holders of the
Securities of all series so affected not joining in the giving of said
direction, it being understood that (subject to Section 6.1) the Trustee shall
have no duty to ascertain whether or not such actions or forebearances are
unduly prejudicial to such Holders.

         Nothing in this Indenture shall impair the right of the Trustee in its
discretion to take any action deemed proper by the Trustee and which is not
inconsistent with such direction or directions by Securityholders.

         SECTION 5.10 Waiver of Past Defaults. Prior to the declaration of the
acceleration of the maturity of the Securities of any series as provided in
Section 5.1, the Holders of a majority in aggregate principal amount of the
Securities of such series at the time Outstanding may on behalf of the Holders
of all the Securities of such series waive any past default or Event of Default
described in clause (d) of Section 5.1 (or, in the case of an event specified in
clause (d) of Section 5.1 which relates to less than all series of Securities
then Outstanding, the Holders of a majority in aggregate principal amount of the
Securities then Outstanding affected thereby (each series voting as a separate
class)) may waive any such default or Event of Default, or, in the case of an
event specified in clause (d) (if the Event of Default under clause (d) relates
to all series of Securities then Outstanding), (e) or (f) of Section 5.1 the
Holders of Securities of a majority in principal amount of all the Securities
then Outstanding (voting as one class) may waive any such default or Event of
Default), and its consequences except a default in respect of a covenant or
provision hereof which cannot be modified or amended without the consent of the
Holder of each Security affected. In the case of any such waiver, the Issuer,
the Trustee and the Holders of the Securities of such series shall be restored
to their former positions and rights hereunder, respectively; but no such waiver
shall extend to any subsequent or other default or impair any right consequent
thereon.

         Upon any such waiver, such default shall cease to exist and be deemed
to have been cured and not to have occurred, and any Event of

<PAGE>   47

                                       39

Default arising therefrom shall be deemed to have been cured, and not to have
occurred for every purpose of this Indenture; but no such waiver shall extend to
any subsequent or other default or Event of Default or impair any right
consequent thereon.

         SECTION 5.11 Trustee to Give Notice of Default, But May Withhold in
Certain Circumstances. The Trustee shall, within 90 days after the occurrence of
a default with respect to the Securities of any series known to a Responsible
Officer of the Trustee, provide notice to the Holders of Securities of such
series and Coupons appertaining thereto, if any, (i) if any Unregistered
Securities of that series are then Outstanding, to the Holders thereof, by
publication at least once in an Authorized Newspaper in London (and, if required
by Section 3.6, at least once in an Authorized Newspaper in Luxembourg), (ii) if
any Unregistered Securities of that series are then Outstanding, to all Holders
thereof who have filed their names and addresses with the Trustee pursuant to
Section 4.4(c)(ii), by mailing such notice to such Holders at such addresses and
(iii) to all Holders of then Outstanding Registered Securities of that series,
by mailing such notice to such Holders at their addresses as they shall appear
in the registry books, unless such defaults shall have been cured before the
giving of such notice (the term "default" or "defaults" for the purposes of this
Section being hereby defined to mean any event or condition which is, or with
notice or lapse of time or both would become, an Event of Default); provided
that, except in the case of default in the payment of the principal of or
interest on any of the Securities of such series, the Trustee shall be protected
in withholding such notice if and so long as the board of directors, the
executive committee, or a trust committee of directors or trustees and/or
Responsible Officers of the Trustee in good faith determines that the
withholding of such notice is in the interests of the Securityholders of such
series.

         SECTION 5.12 Right of Court to Require Filing of Undertaking to Pay
Costs. All parties to this Indenture agree, and each Holder of any Security or
Coupon by his acceptance thereof shall be deemed to have agreed, that any court
may in its discretion require, in any suit for the enforcement of any right or
remedy under this Indenture or in any suit against the Trustee for any action
taken, suffered or omitted by it as Trustee, the filing by any party litigant in
such suit of an undertaking to pay the costs of such suit, and that such court
may in its discretion assess reasonable costs, including reasonable attorneys'
fees, against any

<PAGE>   48

                                       40

party litigant in such suit, having due regard to the merits and good faith of
the claims or defenses made by such party litigant; but the provisions of this
Section shall not apply to any suit instituted by the Trustee, to any suit
instituted by any Securityholder or group of Securityholders of any series
holding in the aggregate more than 10% in aggregate principal amount of the
Securities of such series, or, in the case of any suit relating to or arising
under clause (d) of Section 5.1 (if the suit relates to Securities of more than
one but less than all series), 10% in aggregate principal amount of Securities
Outstanding affected thereby, or in the case of any suit relating to or arising
under clause (d) (if the suit under clause (d) relates to all the Securities
then Outstanding), (e) or (f) of Section 5.1, 10% in aggregate principal amount
of all Securities Outstanding, or to any suit instituted by any Securityholder
for the enforcement of the payment of the principal of or interest on any
Security or Coupon on or after the due date expressed in such Security or
Coupon.

                                   ARTICLE SIX

                             CONCERNING THE TRUSTEE

         SECTION 6.1 Duties and Responsibilities of the Trustee; During Default;
Prior to Default. With respect to the Holders of any series of Securities issued
hereunder, the Trustee, prior to the occurrence of an Event of Default with
respect to the Securities of a particular series and after the curing or waiving
of all Events of Default which may have occurred with respect to such series,
undertakes to perform such duties and only such duties as are specifically set
forth in this Indenture. In case an Event of Default with respect to the
Securities of a series has occurred (which has not been cured or waived) the
Trustee shall exercise such of the rights and powers vested in it by this
Indenture, and use the same degree of care and skill in their exercise, as a
prudent man would exercise or use under the circumstances in the conduct of his
own affairs.

         No provision of this Indenture shall be construed to relieve the
Trustee from liability for its own negligent action, its own negligent failure
to act or its own wilful misconduct, except that

                 (a) prior to the occurrence of an Event of Default with respect
         to the Securities of any series and after the curing or waiving of all
         such Events of Default with respect to such series which may have
         occurred:

                          (i)  the duties and obligations of the Trustee with
                 respect to the Securities of any series shall be determined
                 solely by the

<PAGE>   49

                                       41

                 express provisions of this Indenture, and the Trustee shall not
                 be liable except for the performance of such duties and
                 obligations as are specifically set forth in this Indenture,
                 and no implied covenants or obligations shall be read into this
                 Indenture against the Trustee; and

                          (ii) in the absence of bad faith on the part of the
                 Trustee, the Trustee may conclusively rely, as to the truth of
                 the statements and the correctness of the opinions expressed
                 therein, upon any statements, certificates or opinions
                 furnished to the Trustee and conforming to the requirements of
                 this Indenture; but in the case of any such statements,
                 certificates or opinions which by any provision hereof are
                 specifically required to be furnished to the Trustee, the
                 Trustee shall be under a duty to examine the same to determine
                 whether or not they conform to the requirements of this
                 Indenture;

                 (b) the Trustee shall not be liable for any error of judgment
         made in good faith by a Responsible Officer or Responsible Officers of
         the Trustee, unless it shall be proved that the Trustee was negligent
         in ascertaining the pertinent facts; and

                 (c) the Trustee shall not be liable with respect to any action
         taken or omitted to be taken by it in good faith in accordance with the
         direction of the holders pursuant to Section 5.9 relating to the time,
         method and place of conducting any proceeding for any remedy available
         to the Trustee, or exercising any trust or power conferred upon the
         Trustee, under this Indenture.

         None of the provisions contained in this Indenture shall require the
Trustee to expend or risk its own funds or otherwise incur personal financial
liability in the performance of any of its duties or in the exercise of any of
its rights or powers, if there shall be reasonable ground for believing that the
repayment of such funds or adequate indemnity against such liability is not
reasonably assured to it.

         SECTION 6.2 Certain Rights of the Trustee. Subject to Section 6.1:

                 (a) the Trustee may rely and shall be protected in acting or
         refraining from acting upon any resolution, Officers' Certificate or
         any other certificate, statement, instrument, opinion, report, notice,
         request, consent, order, bond, debenture, note, coupon, security or

<PAGE>   50

                                       42

         other paper or document believed by it to be genuine and to have been
         signed or presented by the proper party or parties;

                 (b) any request, direction, order or demand of the Issuer
         mentioned herein shall be sufficiently evidenced by an Officers'
         Certificate or order of the Issuer (unless other evidence in respect
         thereof be herein specifically prescribed); and any resolution of the
         Board of Directors may be evidenced to the Trustee by a copy thereof
         certified by the secretary or an assistant secretary of the Issuer;

                 (c) the Trustee may consult with counsel and any advice or
         Opinion of Counsel shall be full and complete authorization and
         protection in respect of any action taken, suffered or omitted to be
         taken by it hereunder in good faith and in accordance with such advice
         or Opinion of Counsel;

                 (d) the Trustee shall be under no obligation to exercise any of
         the trusts, rights or powers vested in it by this Indenture at the
         request, order or direction of any of the Securityholders pursuant to
         the provisions of this Indenture, unless such Securityholders shall
         have offered to the Trustee reasonable security or indemnity against
         the costs, expenses and liabilities which might be incurred therein or
         thereby;

                 (e) the Trustee shall not be liable for any action taken or
         omitted by it in good faith and believed by it to be authorized or
         within the discretion, rights or powers conferred upon it by this
         Indenture;

                 (f) prior to the occurrence of an Event of Default hereunder
         and after the curing or waiving of all Events of Default, the Trustee
         shall not be bound to make any investigation into the facts or matters
         stated in any resolution, certificate, statement, instrument, opinion,
         report, notice, request, consent, order, approval, appraisal, bond,
         debenture, note, coupon, security, or other paper or document unless
         requested in writing so to do by the holders of not less than a
         majority in aggregate principal amount of the Securities of all series
         affected then outstanding; provided that, if the payment within a
         reasonable time to the Trustee of the costs, expenses or liabilities
         likely to be incurred by it in the making of such investigation is, in
         the opinion of the Trustee, not reasonably assured to the Trustee by
         the security afforded to it by the terms of this Indenture, the Trustee
         may require reasonable indemnity against such expenses or liabilities
         as a

<PAGE>   51

                                       43

         condition to proceeding; the reasonable expenses of every such
         investigation shall be paid by the Issuer or, if paid by the Trustee or
         any predecessor Trustee, shall be repaid by the Issuer upon demand;

                 (g) the Trustee may execute any of the trusts or powers
         hereunder or perform any duties hereunder either directly or by or
         through agents or attorneys not regularly in its employ and the Trustee
         shall not be responsible for any misconduct or negligence on the part
         of any such agent or attorney appointed with due care by it hereunder;
         and

                 (h) the Trustee shall not be deemed to have knowledge or notice
         of any default or Event of Default unless a Responsible Officer has
         actual knowledge thereof or unless the holders of not less than 25% of
         the aggregate principal amount of the then outstanding Securities of
         any affected series have notified the Trustee thereof.

         SECTION 6.3 Trustee Not Responsible for Recitals, Disposition of
Securities or Application of Proceeds Thereof. The recitals contained herein and
in the Securities, except the Trustee's certificates of authentication, shall be
taken as the statements of the Issuer, and the Trustee assumes no responsibility
for the correctness of the same. The Trustee makes no representation as to the
validity or sufficiency of this Indenture or of the Securities or Coupons. The
Trustee shall not be accountable for the use or application by the Issuer of any
of the Securities or of the proceeds thereof.

         SECTION 6.4 Trustee and Agents May Hold Securities or Coupons;
Collections, etc. The Trustee or any agent of the Issuer or the Trustee, in its
individual or any other capacity, may become the owner or pledgee of Securities
or Coupons with the same rights it would have if it were not the Trustee or such
agent and, subject to Sections 6.8 and 6.13, if operative, may otherwise deal
with the Issuer and receive, collect, hold and retain collections from the
Issuer with the same rights it would have if it were not the Trustee or such
agent.

         SECTION 6.5 Moneys Held by Trustee. Subject to the provisions of
Section 10.4 hereof, all moneys received by the Trustee shall, until used or
applied as herein provided, be held in trust for the purposes for which they
were received, but need not be segregated from other funds except

<PAGE>   52

                                       44

to the extent required by mandatory provisions of law. Neither the Trustee nor
any agent of the Issuer or the Trustee shall be under any liability for interest
on any moneys received by it hereunder.

         SECTION 6.6 Compensation and Indemnification of Trustee and Its Prior
Claim. The Issuer covenants and agrees to pay to the Trustee from time to time,
and the Trustee shall be entitled to, reasonable compensation (which shall not
be limited by any provision of law in regard to the compensation of a trustee of
an express trust) and the Issuer covenants and agrees to pay or reimburse the
Trustee and each predecessor Trustee upon its request for all reasonable
expenses, disbursements and advances incurred or made by or on behalf of it in
accordance with any of the provisions of this Indenture (including the
reasonable compensation and the expenses and disbursements of its counsel and of
all agents and other persons not regularly in its employ) except any such
expense, disbursement or advance as may arise from its negligence or bad faith.
The Issuer also covenants to indemnify the Trustee and each predecessor Trustee
for, and to hold it harmless against, any loss, liability or expense incurred
without negligence or bad faith on its part, arising out of or in connection
with the acceptance or administration of this Indenture or the trusts hereunder
and its duties hereunder, including the costs and expenses of defending itself
against or investigating any claim of

liability in the premises. The obligations of the Issuer under this Section to
compensate and indemnify the Trustee and each predecessor Trustee and to pay or
reimburse the Trustee and each predecessor Trustee for expenses, disbursements
and advances shall constitute additional indebtedness hereunder and shall
survive the satisfaction and discharge of this Indenture. Such additional
indebtedness shall be a senior claim to that of the Securities and Coupons upon
all property and funds held or collected by the Trustee as such, except funds
held in trust for the benefit of the holders of particular Securities or
Coupons, and the Securities and Coupons are hereby subordinated to such senior
claim, but such senior claim shall not be subordinate to any Senior
Indebtedness.

         SECTION 6.7 Right of Trustee to Rely on Officers' Certificate, etc.
Subject to Sections 6.1 and 6.2, whenever in the administration of the trusts of
this Indenture the Trustee shall deem it necessary or desirable that a matter be
proved or established prior to taking or suffering or omitting any action
hereunder, such matter (unless other evidence in respect thereof be herein
specifically prescribed) may in the absence of negligence or bad faith on the
part of the Trustee, be deemed

<PAGE>   53

                                       45

to be conclusively proved and established by an Officers' Certificate delivered
to the Trustee, and such certificate, in the absence of negligence or bad faith
on the part of the Trustee, shall be full warrant to the Trustee for any action
taken, suffered or omitted by it under the provisions of this Indenture upon the
faith thereof.

         SECTION 6.8 Qualification of Trustee; Conflicting Interests. (a) If the
Trustee has or shall acquire any conflicting interest, as defined in this
Section, it shall, within 90 days after ascertaining that it has such
conflicting interest, either eliminate such conflicting interest or resign in
the manner and with the effect specified in this Indenture.

                 (b) In the event that the Trustee shall fail to comply with the
         provisions of subsection (a) of this Section, the Trustee shall, within
         10 days after the expiration of such 90 day period, provide notice of
         such failure to the Securityholders in the manner and to the extent
         required by Section 4.4(c).

                 (c) For the purposes of this Section, the Trustee shall be
         deemed to have a conflicting interest with respect to Securities of any
         series if

                          (i) the Trustee is trustee under this Indenture with
                 respect to the Outstanding Securities of any other series or is
                 a trustee under another indenture under which any other
                 securities, or certificates of interest or participation in any
                 other securities, of the Issuer are outstanding, unless such
                 other indenture is a collateral trust indenture under which the
                 only collateral consists of Securities issued under this
                 Indenture and this Indenture with respect to the Securities of
                 any other series and there shall also be so excluded any other
                 indenture or indentures under which other securities, or
                 certificates of interest or participation in other securities,
                 of the Issuer are outstanding if (i) this Indenture is and, if
                 applicable, this Indenture and any series issued pursuant to
                 this Indenture and such other indenture or indentures are
                 wholly unsecured, and such other indenture or indentures are
                 hereafter qualified under the Trust Indenture Act of 1939,
                 unless the Commission shall have found and declared by order
                 pursuant to Section 305(b) or Section 307(c) of such Trust
                 Indenture Act of 1939 that differences exist between the
                 provisions of this Indenture with respect to Securities of such
                 series and one or more other series, or the provisions of this
                 Indenture and the provisions of such other indenture or
                 indentures which are so likely to involve a material conflict
                 of interest as to make it necessary

<PAGE>   54

                                       46

                 in the public interest or for the protection of investors to
                 disqualify the Trustee from acting as such under this Indenture
                 with respect to Securities of such series and such other
                 series, or under this Indenture or such other indenture or
                 indentures, or (ii) the Issuer shall have sustained the burden
                 of proving, on application to the Commission and after
                 opportunity for hearing thereon, that trusteeship under this
                 Indenture with respect to Securities of such series and such
                 other series, or under this Indenture and such other indenture
                 or indentures is not so likely to involve a material conflict
                 of interest as to make it necessary in the public interest or
                 for the protection of investors to disqualify the Trustee from
                 acting as such under this Indenture with respect to Securities
                 of such series and such other series, or under this Indenture
                 and such other indentures;

                          (ii) the Trustee or any of its directors or executive
                 officers is an obligor upon the Securities of any series issued
                 under this Indenture or an underwriter for the Issuer;

                          (iii) the Trustee directly or indirectly controls or
                 is directly or indirectly controlled by or is under direct or
                 indirect common control with the Issuer or an underwriter for
                 the Issuer;

                          (iv) the Trustee or any of its directors or executive
                 officers is a director, officer, partner, employee, appointee,
                 or representative of the Issuer, or of an underwriter (other
                 than the Trustee itself) for the Issuer who is currently
                 engaged in the business of underwriting, except that (x) one
                 individual may be a director or an executive officer, or both,
                 of the Trustee and a director or an executive officer, or both,
                 of the Issuer, but may not be at the same time an executive
                 officer of both the Trustee and the Issuer; (y) if and so long
                 as the number of directors of the Trustee in office is more
                 than nine, one additional individual may be a director or an
                 executive officer, or both, of the Trustee and a director of
                 the Issuer; and (z) the Trustee may be designated by the Issuer
                 or by any underwriter for the Issuer to act in the capacity of
                 transfer agent, registrar, custodian, paying agent, fiscal
                 agent, escrow agent, or depositary, or in any other similar
                 capacity, or, subject to the provisions of subsection (c)(i) of
                 this Section, to act as trustee, whether under an indenture or
                 otherwise;

                          (v) 10% or more of the voting securities of the
                 Trustee is beneficially owned either by the Issuer or by any
                 director, partner or executive officer thereof, or 20% or more
                 of such voting securities

<PAGE>   55

                                       47

                 is beneficially owned, collectively, by any two or more of such
                 persons; or 10% or more of the voting securities of the Trustee
                 is beneficially owned either by an underwriter for the Issuer
                 or by any director, partner, or executive officer thereof, or
                 is beneficially owned, collectively, by any two or more such
                 persons;

                          (vi) the Trustee is the beneficial owner of, or holds
                 as collateral security for an obligation which is in default,
                 (x) 5% or more of the voting securities or 10% or more of any
                 other class of security of the Issuer, not including the
                 Securities issued under this Indenture and securities issued
                 under any other indenture under which the Trustee is also
                 trustee, or (y) 10% or more of any class of security of an
                 underwriter for the Issuer;

                          (vii) the Trustee is the beneficial owner of, or holds
                 as collateral security for an obligation which is in default,
                 5% or more of the voting securities of any person who, to the
                 knowledge of the Trustee, owns 10% or more of the voting
                 securities of, or controls directly or indirectly or is under
                 direct or indirect common control with, the Issuer;

                          (viii) the Trustee is the beneficial owner of, or
                 holds as collateral security for an obligation which is in
                 default, 10% or more of any class of security of any person
                 who, to the knowledge of the Trustee, owns 50% or more of the
                 voting securities of the Issuer; or

                          (ix) the Trustee owns on May 15 in any calendar year,
                 in the capacity of executor, administrator, testamentary or
                 inter vivos trustee, guardian, committee or conservator, or in
                 any other similar capacity, an aggregate of 25% or more of the
                 voting securities, or of any class of security, of any person
                 the beneficial ownership of a specified percentage of which
                 would have constituted a conflicting interest under Section
                 6.8(c)(vi), (vii) or (viii). As to any such securities of which
                 the Trustee acquired ownership through becoming executor,
                 administrator, or testamentary trustee of an estate which
                 included them, the provisions of the preceding sentence shall
                 not apply, for a period of two years from the date of such
                 acquisition, to the extent that such securities included in
                 such estate do not exceed 25% of such voting securities or 25%
                 of any such class of security. Promptly after May 15 in each
                 calendar year the Trustee shall make a check of its holdings of
                 such securities in any of the above-mentioned capacities as of
                 such May 15. If the Issuer

<PAGE>   56

                                       48

                 fails to make payment in full of principal of or interest on
                 any of the Securities when and as the same becomes due and
                 payable, and such failure continues for 30 days thereafter, the
                 Trustee shall make a prompt check of its holdings of such
                 securities in any of the above-mentioned capacities as of the
                 date of the expiration of such 30-day period, and after such
                 date, notwithstanding the foregoing provisions of this
                 paragraph, all such securities so held by the Trustee, with
                 sole or joint control over such securities vested in it, shall,
                 but only so long as such failure shall continue, be considered
                 as though beneficially owned by the Trustee for the purposes of
                 subsections (c)(vi), (vii) and (viii) of this Section.

         The specification of percentages in subsections (c)(v) to (ix)
inclusive of this Section shall not be construed as indicating that the
ownership of such percentages of the securities of a person is or is not
necessary or sufficient to constitute direct or indirect control for the
purposes of subsections (c)(iii) or (vii) of this Section.

         For the purposes of subsections (c)(vi), (vii), (viii) and (ix), of
this Section, only,

                 (i) the terms "security" and "securities" shall include only
         such securities as are generally known as corporate securities, but
         shall not include any note or other evidence of indebtedness issued to
         evidence an obligation to repay moneys lent to a person by one or more
         banks, trust companies, or banking firms, or any certificate of
         interest or participation in any such note or evidence of indebtedness;

                 (ii) an obligation shall be deemed to be in default when a
         default in payment of principal shall have continued for 30 days or
         more and shall not have been cured; and

                 (iii) the Trustee shall not be deemed to be the owner or holder
         of (x) any security which it holds as collateral security, as trustee
         or otherwise, for an obligation which is not in default as defined in
         clause (ii) above, or (y) any security which it holds as collateral
         security under this Indenture, irrespective of any default hereunder,
         or (z) any security which it holds as agent for collection, or as
         custodian, escrow agent, or depositary, or in any similar
         representative capacity.

         Except as provided above, the word "security" or "securities" as used
in this Section shall mean any note, stock, treasury stock, bond,

<PAGE>   57

                                       49

debenture, evidence of indebtedness, certificate of interest or participation in
any profit-sharing agreement, collateral trust certificate, preorganization
certificate or subscription, transferable share, investment contract, voting
trust certificate, certificate of deposit for a security, fractional undivided
interest in oil, gas or other mineral rights, or, in general, any interest or
instrument commonly known as a "security", or any certificate of interest or
participation in, temporary or interim certificate for, receipt for, guarantee
of, or warrant or right to subscribe to or purchase, any of the foregoing.

         (d) For purposes of this Section:

                 (i) the term "underwriter" when used with reference to the
         issuer shall mean every person who, within three years prior to the
         time as of which the determination is made, has purchased from the
         Issuer with a view to, or has offered or sold for the Issuer in
         connection with, the distribution of any security of the Issuer
         outstanding at such time, or has participated or has had a direct or
         indirect participation in any such undertaking, or has participated or
         has had a participation in the direct or indirect underwriting of any
         such undertaking, but such term shall not include a person whose
         interest was limited to a commission from an underwriter or dealer not
         in excess of the usual and customary distributors' or sellers'
         commission;

                 (ii) the term "director" shall mean any director of a
         corporation or any individual performing similar functions with respect
         to any organization whether incorporated or unincorporated;

                 (iii) the term "person" shall mean an individual, a
         corporation, a partnership, an association, a joint-stock company, a
         trust, an unincorporated organization, or a government or political
         subdivision thereof; as used in this paragraph, the term "trust" shall
         include only a trust where the interest or interests of the beneficiary
         or beneficiaries are evidenced by a security;

                 (iv) the term "voting security" shall mean any security
         presently entitling the owner or holder thereof to vote in the
         direction or management of the affairs of a person, or any security
         issued under or pursuant to any trust, agreement or arrangement whereby
         a trustee or trustees or agent or agents for the owner or holder of
         such security are presently entitled to vote in the direction or
         management of the affairs of a person;

<PAGE>   58

                                       50

                 (v)  the term "Issuer" shall mean any obligor upon the
         Securities; and

                 (vi) the term "executive officer" shall mean the president,
         every vice president, every trust officer, the cashier, the secretary,
         and the treasurer of a corporation, and any individual customarily
         performing similar functions with respect to any organization whether
         incorporated or unincorporated, but shall not include the chairman of
         the board of directors.

         (e) The percentages of voting securities and other securities specified
in this Section shall be calculated in accordance with the following provisions:

                 (i) a specified percentage of the voting securities of the
         Trustee, the Issuer or any other person referred to in this Section
         (each of whom is referred to as a "person" in this paragraph) means
         such amount of the outstanding voting securities of such person as
         entitles the holder or holders thereof to cast such specified
         percentage of the aggregate votes which the holders of all the
         outstanding voting securities of such person are entitled to cast in
         the direction or management of the affairs of such person;

                 (ii) a specified percentage of a class of securities of a
         person means such percentage of the aggregate amount of securities of
         the class outstanding;

                 (iii) the term "amount", when used in regard to securities,
         means the principal amount if relating to evidences of indebtedness,
         the number of shares if relating to capital shares, and the number of
         units if relating to any other kind of security;

                 (iv) the term "outstanding" means issued and not held by or for
         the account of the issuer; the following securities shall not be deemed
         outstanding within the meaning of this definition:

                          (A)  securities of an issuer held in a sinking fund
                 relating to securities of the issuer of the same class;

                          (B) securities of an issuer held in a sinking fund
                 relating to another class of securities of the issuer, if the
                 obligation evidenced by such other class of securities is not
                 in default as to principal or interest or otherwise;

<PAGE>   59

                                       51

                          (C) securities pledged by the issuer thereof as
                 security for an obligation of the issuer not in default as to
                 principal or interest or otherwise; and

                          (D)  securities held in escrow if placed in escrow by
                 the issuer thereof;

provided, that any voting securities of an issuer shall be deemed outstanding if
any person other than the issuer is entitled to exercise the voting rights
thereof; and

                 (v) a security shall be deemed to be of the same class as
         another security if both securities confer upon the holder or holders
         thereof substantially the same rights and privileges; provided, that,
         in the case of secured evidences of indebtedness, all of which are
         issued under a single indenture, differences in the interest rates or
         maturity dates of various series thereof shall not be deemed sufficient
         to constitute such series different classes and provided, further,
         that, in the case of unsecured evidences of indebtedness, differences
         in the interest rates or maturity dates thereof shall not be deemed
         sufficient to constitute them securities of different classes, whether
         or not they are issued under a single indenture.

         SECTION 6.9 Persons Eligible for Appointment as Trustee. The Trustee
for each series of Securities hereunder shall at all times be a corporation
organized and doing business under the laws of the United States of America or
of any State or the District of Columbia having a combined capital and surplus
of at least $50,000,000, and which is authorized under such laws to exercise
corporate trust powers and is subject to supervision or examination by Federal,
State or District of Columbia authority. If such corporation publishes reports
of condition at least annually, pursuant to law or to the requirements of the
aforesaid supervising or examining authority, then for the purposes of this
Section, the combined capital and surplus of such corporation shall be deemed to
be its combined capital and surplus as set forth in its most recent report of
condition so published. In case at any time the Trustee shall cease to be
eligible in accordance with the provisions of this Section, the Trustee shall
resign immediately in the manner and with the effect specified in Section 6.10.

<PAGE>   60

                                       52

         SECTION 6.10 Resignation and Removal; Appointment of Successor Trustee.
(a) The Trustee, or any trustee or trustees hereafter appointed, may at any time
resign with respect to one or more or all series of Securities by giving written
notice of resignation to the Issuer. Upon receiving such notice of resignation,
the Issuer shall promptly appoint a successor trustee or trustees with respect
to the applicable series by written instrument in duplicate, executed by
authority of the Board of Directors, one copy of which instrument shall be
delivered to the resigning Trustee and one copy to the successor trustee or
trustees. If no successor trustee shall have been so appointed with respect to
any series and have accepted appointment within 30 days after the mailing of
such notice of resignation, the resigning trustee may petition any court of
competent jurisdiction for the appointment of a successor trustee, or any
Securityholder who has been a bona fide Holder of a Security or Securities of
the applicable series for at least six months may, subject to the provisions of
Section 5.12, on behalf of himself and all others similarly situated, petition
any such court for the appointment of a successor trustee. Such court may
thereupon, after such notice, if any as it may deem proper and prescribe,
appoint a successor trustee.

         (b) In case at any time any of the following shall occur:

                 (i) the Trustee shall fail to comply with the provisions of
         Section 6.8 with respect to any series of Securities after written
         request therefor by the Issuer or by any Securityholder who has been a
         bona fide Holder of a Security or Securities of such series for at
         least six months; or

                 (ii) the Trustee shall cease to be eligible in accordance with
         the provisions of Section 6.9 and shall fail to resign after written
         request therefor by the Issuer or by any Securityholder; or

                 (iii) the Trustee shall become incapable of acting with respect
         to any series of Securities, or shall be adjudged a bankrupt or
         insolvent, or a receiver or liquidator of the Trustee or of its
         property shall be appointed, or any public officer shall take charge or
         control of the Trustee or of its property of affairs for the purpose of
         rehabilitation, conservation or liquidation;

then, in any such case, the Issuer may remove the Trustee with respect to the
applicable series of Securities and appoint a successor trustee for such series
by written instrument, in duplicate, executed by order of the Board of Directors
of the Issuer, one copy of which instrument shall be

<PAGE>   61

                                       53

delivered to the Trustee so removed and one copy to the successor trustee, or,
subject to the provisions of Section 5.12, any Securityholder who has been a
bona fide Holder of a Security or Securities of such series for at least six
months may on behalf of himself and all others similarly situated, petition any
court of competent jurisdiction for the removal of the Trustee and the
appointment of a successor trustee with respect to such series. Such court may
thereupon, after such notice, if any, as it may deem proper and prescribe,
remove the Trustee and appoint a successor trustee.

         (c) The Holders of a majority in aggregate principal amount of the
Securities of each series at the time Outstanding may at any time remove the
Trustee with respect to securities of such series and appoint a successor
trustee with respect to the Securities of such series by delivering to the
Trustee so removed, to the successor trustee so appointed and to the Issuer the
evidence provided for in Section 7.1 of the action in that regard taken by the
Securityholders.

         (d) any resignation or removal of the Trustee with respect to any
series and any appointment of a successor trustee with respect to such series
pursuant to any of the provisions of this Section 6.10 shall become effective
upon acceptance of appointment by the successor trustee as provided in Section
6.11.

         SECTION 6.11 Acceptance of Appointment by Successor Trustee. Any
successor trustee appointed as provided in Section 6.10 shall execute and
deliver to the Issuer and to its predecessor trustee an instrument accepting
such appointment hereunder, and thereupon the resignation or removal of the
predecessor trustee with respect to all or any applicable series shall become
effective and such successor trustee, without any further act, deed or
conveyance, shall become vested with all rights, powers, duties and obligations
with respect to such series of its predecessor hereunder, with like effect as if
originally named as trustee for such series hereunder; but, nevertheless, on the
written request of the Issuer or of the successor trustee, upon payment of its
charges then unpaid, the trustee ceasing to act shall, subject to Section 10.4,
pay over to the successor trustee all moneys at the time held by it hereunder
and shall execute and deliver an instrument transferring to such successor
trustee all such rights, powers, duties and obligations. Upon request of any
such successor trustee, the Issuer shall execute any and all instruments in
writing for more fully and certainly vesting in and

<PAGE>   62

                                       54

confirming to such successor trustee all such rights and powers. Any trustee
ceasing to act shall, nevertheless, retain a prior claim upon all property or
funds held or collected by such trustee to secure any amounts then due it
pursuant to the provisions of Section 6.6.

         If a successor trustee is appointed with respect to the Securities of
one or more (but not all) series, the Issuer, the predecessor Trustee and each
successor trustee with respect to the Securities of any applicable series shall
execute and deliver an indenture supplemental hereto which shall contain such
provisions as shall be deemed necessary or desirable to confirm that all the
rights, powers, trusts and duties of the predecessor Trustee with respect to the
Securities of any series as to which the predecessor Trustee is not retiring
shall continue to be vested in the predecessor Trustee, and shall add to or
change any of the provisions of this Indenture as shall be necessary to provide
for or facilitate the administration of the trusts hereunder by more than one
trustee, it being understood that nothing herein or in such supplemental
indenture shall constitute such trustees or co-trustees of the same trust and
that each such trustee shall be trustee of a trust or trusts under separate
indentures.

         No successor trustee with respect to any series of Securities shall
accept appointment as provided in this Section 6.11 unless at the time of such
acceptance such successor trustee shall be qualified under the provisions of
Section 6.8 and eligible under the provisions of Section 6.9.

         Upon acceptance of appointment by any successor trustee as provided in
this Section 6.11, the Issuer shall mail notice thereof (a) if any Unregistered
Securities of a series affected are then Outstanding, to the Holders thereof, by
publication of such notice at least once in an Authorized Newspaper in London
(and, if required by Section 3.6. at least once in an Authorized Newspaper in
Luxembourg), (b) if any Unregistered Securities of a series affected are then
Outstanding, to the Holders thereof who have filed their names and addresses
with the Trustee pursuant to Section 4.4(c)(ii), by mailing such notice to such
holders at such addresses as were so furnished to the Trustee (and the Trustee
shall make such information available to the Issuer for such purpose) and (c) to
the Holders of Registered Securities of each series affected, by first-class
mail to such Holders of Securities of any series for which such successor
trustee is acting as trustee at their last addresses as they shall appear in the
Security register. If the Issuer fails to mail such notice within ten days after
acceptance of appointment by the successor trustee,

<PAGE>   63

                                       55

the successor trustee shall cause such notice to be mailed at the expense of
the Issuer.

         SECTION 6.12. Merger, Conversion, Consolidation or Succession to
Business of Trustee. Any corporation into which the Trustee may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which the Trustee shall be a
party or any corporation succeeding to the corporate trust business of the
Trustee, shall be the successor of the Trustee hereunder, provided, that such
corporation shall be qualified under the provisions of Section 6.8 and eligible
under the provisions of Section 6.9 without the execution or filing of any paper
or any further act on the part of any of the parties hereto, anything herein to
the contrary notwithstanding.

         In case at the time such successor to the Trustee shall succeed to the
trusts created by this Indenture any of the Securities of any series shall have
been authenticated but not delivered any such successor to the Trustee may adopt
the certificate of authentication of any predecessor Trustee and deliver such
Securities so authenticated; and, in case at that time any of the Securities of
any series shall not have been authenticated, any successor to the Trustee may
authenticate such Securities either in the name of any predecessor hereunder or
in the name of the successor Trustee; and in all such cases such certificate
shall have the full force which it is anywhere in the Securities of such series
or in this Indenture provided that the certificate of the Trustee shall have;
provided, that the right to adopt the certificate of authentication of any
predecessor Trustee or to authenticate Securities of any series in the name of
any predecessor Trustee shall apply only to its successor or successors by
merger, conversion or consolidation.

         SECTION 6.13 Preferential Collection of Claims Against the Issuer. (a)
Subject to the provisions of this Section, if the Trustee shall be or shall
become a creditor, directly or indirectly, secured or unsecured, of the Issuer
within four months prior to a default, as defined in subsection (c) of this
Section, or subsequent to such a default, then, unless and until such default
shall be cured, the Trustee shall set apart and hold in a special account for
the benefit of the Trustee individually, the Holders of the Securities and the
Holders of other indenture securities (as defined in this Section):

                 (1) an amount equal to any and all reductions in the amount
         due and owing upon any claim as such creditor in respect of principal
         or

<PAGE>   64

                                       56

         interest, effected after the beginning of such four months period and
         valid as against the Issuer and its other creditors, except any such
         reduction resulting from the receipt or disposition of any property
         described in subsection (a)(2) of this Section, or from the exercise of
         any right of set-off which the Trustee could have exercised if a
         petition in bankruptcy had been filed by or against the Issuer upon the
         date of such default; and

                 (2) all property received by the Trustee in respect of any
         claim as such creditor, either as security therefore, or in
         satisfaction or composition thereof, or otherwise, after the beginning
         of such four months' period or an amount equal to the proceeds of any
         such property, if disposed of, subject, however, to the rights, if any,
         of the Issuer and its other creditors in such property or such
         proceeds.

         Nothing herein contained, however, shall affect the right of the
Trustee:

                 (A) to retain for its own account (i) payments made on account
         of any such claim by any person (other than the Issuer) who is liable
         thereon, (ii) the proceeds of the bona fide sale of any such claim by
         the Trustee to a third person, and (iii) distributions made in cash,
         securities or other property in respect of claims filed against the
         Issuer in bankruptcy or receivership or in proceedings for
         reorganization pursuant to Title 11 of the United States Code or
         applicable state law;

                 (B) to realize, for its own account, upon any property held by
         it as security for any such claim, if such property was so held prior
         to the beginning of such four months' period;

                 (C) to realize, for its own account, but only to the extent of
         the claim hereinafter mentioned, upon any property held by it as
         security for any such claim, if such claim was created after the
         beginning of such four months' period and such property was received as
         security therefor simultaneously with the creation thereof, and if the
         Trustee shall sustain the burden of proving that at the time such
         property was so received the Trustee had no reasonable cause to believe
         that a default as defined in subsection (c) of this Section would occur
         within four months; or

                 (D) to receive payment on any claim referred to in paragraph
         (B) or (C), against the release of any property held as security for
         such claim as provided in such paragraph (B) or (C) as the case may be,
         to the extent of the fair value of such property.

<PAGE>   65

                                       57

         For the purpose of paragraphs (B), (C) and (D), property substituted
after the beginning of such four months' period for property held as security at
the time of such substitution shall, to the extent of the fair value of the
property released, have the same status as the property released and to the
extent that any claim referred to in any of such paragraphs is created in
renewal of or in substitution for or for the purpose of repaying or refunding
any pre-existing claim of Trustee as such creditor, such claim shall have the
same status as such pre- existing claim.

         If the Trustee shall be required to account, the funds and property
held in such special account and the proceeds thereof shall be apportioned
between the Trustee, the Securityholders and the holders of other indenture
securities in such manner that the Trustee, such Securityholders and the holders
of other indenture securities realize, as a result of payment from such special
account and payments of dividends on claims filed against the Issuer in
bankruptcy or receivership or in proceedings for reorganization pursuant to
Title 11 of the United States Code or applicable State law, the same percentage
of their respective claims, figured before crediting to the claim of the Trustee
anything on account of the receipt by it from the Issuer of the funds and
property in such special account and before crediting to the respective claims
of the Trustee, such Securityholders and the holders of other indenture
securities dividends on claims filed against the Issuer in bankruptcy or
receivership or in proceedings for reorganization pursuant to Title 11 of the
United States Code or applicable State law, but after crediting thereon receipts
on account of the indebtedness represented by their respective claims from all
sources other than from such dividends and from the funds and property so held
in such special account. As used in this paragraph, with respect to any claim,
the term "dividends" shall include any distribution with respect to such claim,
in bankruptcy or receivership or in proceedings for reorganization pursuant to
Title 11 of the United States Code or applicable State law, whether such
distribution is made in cash, securities or other property, but shall not
include and such distribution with respect to the secured portion, if any, of
such claim. The court in which such bankruptcy, receivership or proceeding for
reorganization is pending shall have jurisdiction (i) to apportion between the
Trustee, such Securityholders and the holders of other indenture securities, in
accordance with the provisions of this paragraph, the funds and property held in
such special account and the proceeds thereof, or (ii) in lieu of such
apportionment, in whole or in part, to give to the

<PAGE>   66

                                       58

provisions of this paragraph, due consideration in determining the fairness of
the distributions to be made to the Trustee, such Securityholders and the
holders of other indenture securities with respect to their respective claims,
in which event it shall not be necessary to liquidate or to appraise the value
of any securities or other property held in such special account or as security
for any such claim, or to make a specific allocation of such distributions as
between the secured and unsecured portions of such claims, or otherwise to apply
the provisions of this paragraph as a mathematical formula.

         Any Trustee who has resigned or been removed after the beginning of
such four months' period shall be subject to the provisions of this subsection
(a) as though such resignation or removal had not occurred. If any Trustee has
resigned or been removed prior to the beginning of such four months' period, it
shall be subject to the provisions of this subsection (a) if and only if the
following conditions exist:

                 (i) the receipt of property or reduction of claim which would
         have given rise to the obligation to account, if such Trustee had
         continued as trustee, occurred after the beginning of such four months'
         period; and

                 (ii) such receipt of property or reduction of claim occurred
         within four months after such resignation or removal.

         (b) There shall be excluded from the operation of this Section a
creditor relationship arising from

                 (1) the ownership or acquisition of securities issued under any
         indenture, or any security or securities having a maturity of one year
         or more at the time of acquisition by the Trustee;

                 (2) advances authorized by a receivership or bankruptcy court
         of competent jurisdiction or by this Indenture for the purpose of
         preserving any property which shall at any time be subject to the lien
         of this Indenture or of discharging tax liens or other prior liens or
         encumbrances thereon, if notice of such advance and of the
         circumstances surrounding the making thereof is given to the
         Securityholders at the time and in the manner provided in this
         Indenture;

                 (3) disbursements made in the ordinary course of business in
         the capacity of trustee under an indenture, transfer agent, registrar,
         custodian, paying agent, fiscal agent or depositary, or other similar
         capacity;

<PAGE>   67

                                       59

                 (4) an indebtedness created as a result of services rendered or
         premises rented or an indebtedness created as a result of goods or
         securities sold in a cash transaction as defined in subsection (c)(3)
         below:

                 (5) the ownership of stock or of other securities of a
         corporation organized under the provisions of Section 25(a) of the
         Federal Reserve Act, as amended, which is directly or indirectly a
         creditor of the Issuer, or

                 (6) the acquisition, ownership, acceptance or negotiation of
         any draft, bills of exchange, acceptance or obligations which fall
         within the classification of self-liquidating paper as defined in
         subsection (c)(4) of this Section.

         (c)  As used in this Section:

                 (1) the term "default" shall mean any failure to make payment
         in full of the principal of or interest upon any of the Securities or
         upon the other indenture securities when and as such principal or
         interest becomes due and payable;

                 (2) the term "other indenture securities" shall mean securities
         upon which the Issuer is an obligor (as defined in the Trust Indenture
         Act of 1939) outstanding under any other indenture (i) under which the
         Trustee is also trustee, (ii) which contains provisions substantially
         similar to the provisions of subsection (a) of this Section, and (iii)
         under which a default exists at the time of the apportionment of the
         funds and property held in said special account;

                 (3) the term "cash transaction" shall mean any transaction in
         which full payment for goods or securities sold is made within seven
         days after delivery of the goods or securities in currency or in checks
         or other orders drawn upon banks or bankers and payable upon demand;

                 (4) the term "self-liquidating paper" shall mean any draft,
         bill of exchange, acceptance or obligation which is made, drawn,
         negotiated or incurred by the Issuer for the purpose of financing the
         purchase, processing, manufacture, shipment, storage or sale of goods,
         wares or merchandise and which is secured by documents evidencing title
         to, possession of, or a lien upon the goods, wares or merchandise or
         the receivables or proceeds arising from the sale of the goods, wares
         or merchandise previously constituting the secu-

<PAGE>   68

                                       60

         rity, provided the security is received by the Trustee simultaneously
         with the creation of the creditor relationship with the Issuer arising
         from the making, drawing, negotiating or incurring of the draft, bill
         of exchange, acceptance or obligation; and

                 (5) the term "Issuer" shall mean any obligor upon the
                     Securities.

                                  ARTICLE SEVEN

                         CONCERNING THE SECURITYHOLDERS

         SECTION 7.1 Evidence of Action Taken by Securityholders. Any request,
demand, authorization, direction, notice, consent, waiver or other action
provided by this Indenture to be given or taken by a specified percentage in
principal amount of the Securityholders of any or all series may be embodied in
and evidenced by one or more instruments of substantially similar tenor signed
by such specified percentage of Securityholders in person or by agent duly
appointed in writing; and, except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments are delivered
to the Trustee. Proof of execution of any instrument or of a writing appointing
any such agent shall be sufficient for any purpose of this Indenture and
(subject to Sections 6.1 and 6.2) conclusive in favor of the Trustee and the
Issuer, if made in the manner provided in this Article.

         SECTION 7.2 Proof of Execution of Instruments and of Holding of
Securities. Subject to Sections 6.1 and 6.2, the execution of any instrument by
a Securityholder or his agent or proxy may be proved in the following manner:

                 The fact and date of the execution by any Holder of any
         instrument may be proved by the certificate of any notary public or
         other officer of any jurisdiction authorized to take acknowledgments of
         deeds or administer oaths that the person executing such instruments
         acknowledged to him the execution thereof, or by an affidavit of a
         witness to such execution sworn to before any such notary or other such
         officer. Where such execution is by or on behalf of any legal entity
         other than an individual, such certificate or affidavit shall also
         constitute sufficient proof of the authority of the person executing
         the same. The fact of the holding by any Holder

<PAGE>   69

                                       61

         of an Unregistered Security of any series, and the identifying number
         of such Security and the date of his holding the same, may be proved by
         the production of such Security or by a certificate executed by any
         trust company, bank, banker or recognized securities dealer wherever
         situated satisfactory to the Trustee, if such certificate shall be
         deemed by the Trustee to be satisfactory. Each such certificate shall
         be dated and shall state that on the date thereof a Security of such
         series bearing a specified identifying number was deposited with or
         exhibited to such trust company, bank, banker or recognized securities
         dealer by the person named in such certificate. Any such certificate
         may be issued in respect of one or more Unregistered Securities of one
         or more series specified therein. The holding by the person named in
         any such certificate of any Unregistered Securities of any series
         specified therein shall be presumed to continue for a period of one
         year from the date of such certificate unless at the time of any
         determination of such holding (1) another certificate bearing a later
         date issued in respect of the same Securities shall be produced, or (2)
         the Security of such series specified in such certificate shall be
         produced by some other person, or (3) the Security of such series
         specified in such certificate shall have ceased to be Outstanding.
         Subject to Sections 6.1 and 6.2, the fact and date of the execution of
         any such instrument and the amount and numbers of Securities of any
         series held by the person so executing such instrument and the amount
         and numbers of any Security or Securities for such series may also be
         proven in accordance with such reasonable rules and regulations as may
         be prescribed by the Trustee for such series or in any other manner
         which the Trustee for such series may deem sufficient.

         SECTION 7.3  Holders to be Treated as Owners.  The Issuer, the Trustee
and any agent of the Issuer or the Trustee may deem and treat the person in
whose name any Security shall be registered upon the Security register for such
series as the absolute owner of such Security (whether or not such Security
shall be overdue and not withstanding any notation of ownership or other
writing thereon) for the purpose of receiving payment of or on account of the
principal of and, subject to the provisions of this Indenture, interest on such
Security and for all other purposes; and neither the Issuer nor the Trustee nor
any agent of the Issuer or the Trustee shall be affected by any notice to the
contrary.  The

<PAGE>   70

                                       62

Issuer, the Trustee and any agent of the lssuer or the Trustee may treat the
Holder of any Unregistered Security and the Holder of any Coupon as the absolute
owner of such Unregistered Security or Coupon (whether or not such Unregistered
Security or Coupon shall be overdue) for the purpose of receiving payment
thereof or on account thereof and for all other purposes and neither the Issuer,
the Trustee, nor any agent of the Issuer or the Trustee shall be affected by any
notice to the contrary. All such payments so made to any such person, or upon
his order, shall be valid, and, to the extent of the sum or sums so paid,
effectual to satisfy and discharge the liability for moneys payable upon any
such Security or Coupon.

          SECTION 7.4 Securities Owned by Issuer Deemed Not Outstanding. In
determining whether the Holders of the requisite aggregate principal amount of
Outstanding Securities of any or all series have concurred in any direction,
consent or waiver under this Indenture. Securities which are owned by the Issuer
or any other obligor on the Securities with respect to which such determination
is being made or by any person directly or indirectly controlling or controlled
by or under direct or indirect common control with the Issuer or any other
obligor on the Securities with respect to which such determination is being made
shall be disregarded and deemed not to be Outstanding for the purpose of any
such determination, except that for the purpose of determining whether the
Trustee shall be protected in relying on any such direction, consent or waiver
only Securities which the Trustee knows are so owned shall be so disregarded.
Securities so owned which have been pledged in good faith may be regarded as
Outstanding if the pledgee establishes to the satisfaction of the Trustee the
pledgee's right so to act with respect to such Securities and that the pledgee
is not the Issuer or any other obligor upon the Securities or any person
directly or indirectly controlling or controlled by or under direct or indirect
common control with the Issuer or any other obligor on the Securities. In case
of a dispute as to such right, the advice of counsel shall be full protection in
respect of any decision made by the Trustee in accordance with such advice. Upon
request of the Trustee, the Issuer shall furnish to the Trustee promptly a
written statement by two of its officers (which need not comply with Section
11.5) listing and identifying all Securities, if any, known by the Issuer to be
owned or held by or for the account of any of the above-described persons; and,
subject to Sections 6.1 and 6.2, the Trustee shall be entitled to accept such
Officers' Certificate as conclusive evidence of the fact therein set

<PAGE>   71

                                       63

forth and of the fact that all Securities not listed therein are Outstanding for
the purpose of any such determination.

         SECTION 7.5 Right of Revocation of Action Taken. At any time prior to
(but not after) the evidencing to the Trustee, as provided in Section 7.1, of
the taking of any action by the Holders of the percentage in aggregate principal
amount of the Securities of any or all series, as the case may be, specified in
this Indenture in connection with such action, any Holder of a Security the
serial number of which is shown by the evidence to be included among the serial
number of the Securities the Holders of which have consented to such action may,
by filing written notice at the Corporate Trust Office and upon proof of holding
as provided in this Article, revoke such action so far as concerns such
Security. Except as aforesaid any such action taken by the Holder of any
Security shall be conclusive and binding upon such Holder and upon all future
Holders and owners of such Security and of any Securities issued in exchange or
substitution therefore, irrespective of whether or not any notation in regard
thereto is made upon any such Security. Any action taken by the Holders of the
percentage in aggregate principal amount of the Securities of any or all series,
as the case may be, specified in this Indenture in connection with such action
shall be conclusively binding upon the Issuer, the Trustee and the Holders of
all the Securities affected by such action.

                                  ARTICLE EIGHT

                             SUPPLEMENTAL INDENTURES

         SECTION 8.1 Supplemental Indentures Without Consent of Securityholders.
The Issuer, when authorized by a resolution of its Board of Directors, and the
Trustee may from time to time and at any time enter into an indenture or
indentures supplemental hereto (which shall conform to the provisions of the
Trust Indenture Act of 1939 as in force at the date of the execution thereof)
for one or more of the following purposes:

                 (a) to convey, transfer, assign, mortgage or pledge to the
         Trustee as security for the Securities of one or more series any
         property or assets:

                 (b) to evidence the succession of another corporation to the
         Issuer, or successive successions, and the assumption by the successor
         corporation of the covenants, agreements and obligations of the Issuer
         pursuant to Article Nine;

<PAGE>   72

                                       64

                 (c) to add to the covenants of the Issuer such further
         covenants, restrictions, conditions or provisions as its Board of
         Directors and the Trustee shall consider to be for the protection of
         the Holders of Securities or Coupons, and to make the occurrence, or
         the occurrence and continuance, of a default in any such additional
         covenants, restrictions, conditions or provisions an Event of Default
         permitting the enforcement of all or any of the several remedies
         provided in this Indenture as herein set forth; provided, that in
         respect of any such additional covenant, restriction, condition or
         provision such supplemental indenture may provide for a particular
         period of grace after default (which period may be shorter or longer
         than that allowed in the case of other defaults) or may provide for an
         immediate enforcement upon such an Event of Default or may limit the
         remedies available to the Trustee upon such an Event of Default or may
         limit the right of the Holders of a majority in aggregate principal
         amount of the Outstanding Securities of such series to waive such an
         Event of Default;

                 (d) to cure any ambiguity or to correct or supplement any
         provision contained herein or in any supplemental indenture which may
         be defective or inconsistent with any other provision contained herein
         or in any supplemental indenture; or to make such other provisions in
         regard to matters or questions arising under this Indenture or under
         any supplemental indenture as the Board of Directors may deem necessary
         or desirable and which shall not adversely affect the interests of the
         Holders of the Securities;

                 (e) to provide for the issuance under this Indenture of
         Securities in coupon form (including Securities registrable as to
         principal only) and to provide for exchangeability of such Securities
         with Securities issued hereunder in fully registered form, and to make
         all appropriate changes for such purpose; and

                 (f) to evidence and provide for the acceptance of appointment
         hereunder by a successor trustee with respect to the Securities of one
         or more series, or of the Coupons appertaining to such Securities, and
         to add to or change any of the provisions of this Indenture as shall be
         necessary to provide for or facilitate the administration of the trusts
         hereunder by more than one trustee, pursuant to the requirements of
         Section 6.11.

         The Trustee is hereby authorized to join with the Issuer in the
execution of any such supplemental indenture, to make any further

<PAGE>   73

                                       65

appropriate agreements and stipulations which may be therein contained and to
accept the conveyance, transfer, assignment, mortgage or pledge of any property
thereunder, but the Trustee shall not be obligated to enter into any such
supplemental indenture which affects the Trustee's own rights, duties or
immunities under this Indenture or otherwise.

         Any supplemental indenture authorized by the provisions of this Section
may be executed without the consent of the Holders of any of the Securities at
the time Outstanding, notwithstanding any of the provisions of Section 8.2.

         SECTION 8.2 Supplemental Indentures With Consent of Securityholders.
With the consent (evidenced as provided in Article Seven of the Holders not less
than 66 2/3% in aggregate principal amount of the Securities at the time
Outstanding of all series affected by such supplemental indenture (voting as one
class), the Issuer, when authorized by a resolution of its Board of Directors,
and the Trustee may, from time to time and at any time, enter into an indenture
or indentures supplemental hereto (which shall conform to the provisions of the
Trust Indenture Act of 1939 as in force at the date of execution thereof) for
the purpose of adding any provisions to or changing in any manner or eliminating
any of the provisions of this Indenture or of any supplemental indenture or of
modifying in any manner the rights of the Holders of the Securities of each such
series or the coupons appertaining to such Securities; provided, that no such
supplemental indenture shall (a) extend the final maturity of any Security, or
reduce the principal amount thereof or the method in which amounts of payments
of principal or interest thereon are determined, or reduce the rate or extend
the time of payment of interest thereon, or change the coin or currency or units
based on or related to currencies (including ECU) of payment thereof, or reduce
any amount payable on redemption thereof or reduce the amount of the principal
of an Original Issue Discount Security that would be due and payable upon an
acceleration of the maturity thereof pursuant to Section 5.1 or the amount
thereof provable in bankruptcy pursuant to Section 5.2, or impair or affect the
right of any Securityholder to institute suit for the payment thereof or, if the
Securities provide therefore, any right of repayment at the option of the
Securityholder or make any change in Article Thirteen hereof that adversely
affects the rights of any Holder, in each case, without the consent of the
Holder of each Security so affected, or (b) reduce the aforesaid percentage of
Securities of any series, the consent of the Holders of which is required for
any such supplemental indenture, without the consent of the Holder of each
Security so affected.

<PAGE>   74

                                       66

         Upon the request of the Issuer, accompanied by a copy of a resolution
of the Board of Directors certified by the secretary or an assistant secretary
of the Issuer authorizing the execution of any such supplemental indenture, and
upon the filing with the Trustee of evidence of the consent of Securityholders

as aforesaid and other documents, if any, required by Section 7.1, the Trustee
shall join with the Issuer in the execution of such supplemental indenture
unless such supplemental indenture affects the Trustee's own rights, duties or
immunities under this Indenture or otherwise, in which case the Trustee may in
its discretion, but shall not be obligated to, enter into such supplemental
indenture.

         It shall not be necessary for the consent of the Securityholders under
this section to approve the particular form of any proposed supplemental
indenture, but it shall be sufficient if such consent shall approve the
substance thereof.

         Promptly after the execution by the Issuer and the Trustee of any
supplemental indenture pursuant to the provisions of this Section, the Issuer
shall mail a notice thereof (i) by first class mail to the Holders of then
Outstanding Registered Securities of each series affected thereby at their
addresses as they shall appear on the registry books of the Issuer, (ii) if any
Unregistered Securities of a series affected thereby are then Outstanding, to
the Holders thereof who have filed their names and addresses with the Trustee
pursuant to Section 4.4(c)(ii), by mailing a notice thereof by first class mail
to such Holders at such addresses as were so furnished to the Trustee and (iii)
if any Unregistered Securities of a series affected thereby are then
Outstanding, to all holders thereof by publication of a notice thereof at least
once in an Authorized Newspaper in London (and, if required by Section 3.6, at
least once in an authorized Newspaper in Luxembourg), and in each case such
notice shall set forth in general terms the substance of such supplemental
indenture. Any failure of the Issuer to mail such notice, or any defect therein,
shall not however, in any way impair or affect the validity of any such
supplemental indenture.

         SECTION 8.3 Effect of Supplemental Indenture. Upon the execution of any
supplemental indenture pursuant to the provisions hereof, this Indenture shall
be and be deemed to be modified and amended in accordance therewith and the
respective rights, limitations of rights, obligations, duties and immunities
under this Indenture of the Trustee,

<PAGE>   75

                                       67

the Issuer and the Holders of Securities of each series affected thereby shall
thereafter be determined, exercised and enforced hereunder subject in all
respects to such modifications and amendments, and all the terms and conditions
of any such supplemental indenture shall be and be deemed to be part of the
terms and conditions of this Indenture of any and all purposes.

         SECTION 8.4 Documents to Be Given to Trustee. The Trustee, subject to
the provisions of Sections 6.1 and 6.2, may receive an Officers' Certificate and
an Opinion Of Counsel as conclusive evidence that any supplemental indenture
executed pursuant to this Article Eight complies with the applicable provisions
of this Indenture.

         SECTION 8.5 Notation on Securities in Respect of Supplemental
Indentures. Securities of any series authenticated and delivered after the
execution of any supplemental indenture pursuant to the provisions of this
Article may bear a notation in form approved by the Trustee for such series as
to any matter provided for by such supplemental indenture or as to any action
taken at any such meeting. If the Issuer or the Trustee shall so determine, new
Securities of any series so modified as to conform, in the opinion of the
Trustee and the Board of Directors, to any modification of this Indenture
contained in any such supplemental indenture may be prepared by the Issuer,
authenticated by the Trustee and delivered in exchange for the Securities of
such series then Outstanding.

                                  ARTICLE NINE

                    CONSOLIDATION, MERGER, SALE OR CONVEYANCE

         SECTION 9.1 Issuer May Consolidate, etc., on Certain Terms. The issuer
covenants that it will not merge or consolidate with any other corporation or
sell or convey all or substantially all of its assets to any Person, unless (i)
either the Issuer shall be the continuing corporation, or the successor
corporation or the Person which acquires by sale or conveyance substantially all
the assets of the Issuer (if other than the Issuer) shall be a corporation
organized under the laws of the United States of America or any State thereof
and shall expressly assume the due and punctual payment of the principal of and
interest on all the Securities and Coupons, according to their tenor, and the
due and

<PAGE>   76

                                       68

punctual performance and observance of all of the covenants and conditions of
this Indenture to be performed or observed by the Issuer by supplemental
indenture satisfactory to the Trustee, executed and delivered to the Trustee by
such corporation, and (ii) the Issuer or such successor corporation, as the case
may be, shall not, immediately after such merger or consolidation, or such sale
or conveyance, be in default in the performance of any such covenant or
condition.

         SECTION 9.2 Successor Corporation Substituted. In case of any such
consolidation, merger, sale or conveyance and following such an assumption by
the successor corporation, such successor corporation shall succeed to and be
substituted for the Issuer, with the same effect as if it had been named herein.
Such successor corporation may cause to be signed, and may issue either in its
own name or in the name of the Issuer prior to such succession any or all of the
Securities issuable hereunder, together with any Coupons appertaining thereto,
which theretofore shall not have been signed by the Issuer and delivered to the
Trustee; and, upon the order of such successor corporation instead of the Issuer
and subject to all the terms, conditions and limitations in this Indenture
prescribed, the Trustee authenticate and shall deliver any Securities, together
with any Coupons appertaining thereto, which previously shall have been signed
and delivered by the officers of the Issuer to the Trustee for authentication,
and any Securities, together with any Coupons appertaining thereto, which such
successor corporation thereafter shall cause to be signed and delivered to the
Trustee for that purpose. All of the Securities, together with any Coupons
appertaining thereto, so issued shall in all respects have the same legal rank
and benefit under this Indenture as the Securities, together with any Coupons
appertaining thereto, theretofore or thereafter issued in accordance with the
terms of this Indenture as though all of such Securities and Coupons had been
issued at the date of the execution hereof.

         In case of any such consolidation, merger, sale, lease or conveyance
such changes in phraseology and form (but not in substance) may be made in the
Securities and Coupons thereafter to be issued as may be appropriate.

         In the event of any such sale or conveyance (other than a conveyance by
way of lease) the Issuer or any successor corporation which shall theretofore
have become such in the manner described in this Article shall be discharged
from all obligations and covenants under this Indenture and the Securities and
may be liquidated and dissolved.

<PAGE>   77

                                       69

         SECTION 9.3 Opinion of Counsel to Trustee. The Trustee, subject to the
provisions of Sections 6.1 and 6.2, may receive an Opinion of Counsel, prepared
in accordance with Section 11.5, as conclusive evidence that any such
consolidation, merger, sale, lease or conveyance and any such assumption, and
any such liquidation or dissolution, complies with the applicable provisions of
this Indenture.

                                   ARTICLE TEN

                    SATISFACTION AND DISCHARGE OF INDENTURE:
                                UNCLAIMED MONEYS

         SECTION 10.1 Satisfaction and Discharge of Indenture. (A) If at any
time (a) the Issuer shall have paid or caused to be paid the principal of and
interest on all the Securities of any series Outstanding hereunder and all
unmatured Coupons appertaining thereto (other than Securities or Coupons which
have been destroyed, lost or stolen and which have been replaced or paid as
provided in Section 2.9) as and when the same shall have become due and payable,
or (b) the Issuer shall have delivered to the Trustee for cancellation all
Securities of any series theretofore authenticated and all unmatured Coupons
appertaining thereto (other than any Securities or Coupons of such series which
shall have been destroyed, lost or stolen and which shall have been replaced or
paid as provided in Section 2.9) or (c) (i) all the Securities of such series
not theretofore delivered to the Trustee for cancellation shall have become due
and payable, or are by their terms to become due and payable within one year or
are to be called for redemption within one year under arrangements satisfactory
to the Trustee for the giving of notice of redemption, and (ii) the Issuer shall
have irrevocably deposited or caused to be deposited with the Trustee as trust
funds the entire amount in cash (other than moneys repaid by the Trustee or any
paying agent to the Issuer in accordance with Section 10.4) or U.S. Government
Obligations, maturing as to principal and interest in such amounts and at such
times as will insure the availability of cash (without consideration of any
reinvestment of such principal or interest), or a combination of U.S. Government
Obligations and cash sufficient to pay at maturity or upon redemption all
Securities of such series and all unmatured Coupons appertaining thereto (other
than any Securities or Coupons of such series which shall have been destroyed,
lost or stolen and which shall have been

<PAGE>   78

                                       70

replaced or paid as provided in Section 2.9) not theretofore delivered to the
Trustee for cancellation, including principal and interest due or to become due
to such date of maturity as the case may be, and if, in any such case, the
Issuer shall also pay or cause to be paid all other sums payable hereunder by
the Issuer with respect to Securities of such series and Coupons appertaining
thereto, then this Indenture shall cease to be of further effect with respect to
Securities of such series and Coupons appertaining thereto (except as to (i)
rights of registration of transfer and exchange, and the Issuer's right of
optional redemption, (ii) substitution of mutilated, defaced, destroyed, lost or
stolen Securities or Coupons, (iii) rights of holders of Securities and Coupons
appertaining thereto to receive payments of principal thereof and interest
thereon upon the original stated due dates therefore (but not upon acceleration)
and remaining rights of the holders to receive mandatory sinking fund payments,
if any, (iv) the rights, obligations, duties and immunities of the Trustee
hereunder, including those under Section 6.6. (v) the rights of the
Securityholders of such series as beneficiaries hereof with respect to the
property so deposited with the Trustee payable to all or any of them, and (vi)
the obligations of the Issuer under Section 3.2) and the Trustee, on demand of
the Issuer accompanied by an Officers' Certificate and an Opinion of Counsel and
at the cost and expense of the Issuer, shall execute proper instruments
acknowledging such satisfaction of and discharging this Indenture with respect
to such series; provided, that the rights of Holders of the Securities and
Coupons to receive amounts in respect of principal of and interest on the
Securities and Coupons held by them shall not be delayed longer than required by
then-applicable mandatory rules or policies of any securities exchange upon
which the Securities are listed. The Issuer agrees to reimburse the Trustee for
any costs or expenses thereafter reasonably and properly incurred and to
compensate the Trustee for any services thereafter reasonably and properly
rendered by the Trustee in connection with this Indenture or the Securities and
Coupons of such series.

         (B) The following provisions shall apply to the Securities of each
series unless specifically otherwise provided in a Board Resolution, Officers'
Certificate or indenture supplemental hereto provided pursuant to Section 2.3.
In addition to discharge of the Indenture pursuant to the next preceding
paragraph, the Issuer shall be deemed to have paid and discharged the entire
indebtedness on all the Securities of a series and Coupons appertaining thereto
on the 121st day after the date of the

<PAGE>   79

                                       71

deposit referred to in subparagraph (a) below, and the provisions of this
Indenture with respect to the Securities of such series and Coupons appertaining
thereto shall no longer be in effect (except as to (i) rights of registration of
transfer and exchange of Securities of such series, and of Coupons appertaining
thereto, (ii) substitution of apparently mutilated, defaced, destroyed, lost or
stolen Securities or Coupons, (iii) rights of holders of Securities and Coupons
appertaining thereto to receive, from the trust fund described in subparagraph
(a) below, payments of principal thereof and interest thereon, upon the original
stated due dates therefore (but not upon acceleration) and remaining rights of
the holders to receive sinking fund payments if any, (iv) the rights,
obligations, duties and immunities of the Trustee hereunder, including those
under section 6.6, (v) the rights of the holders of Securities of such series
and Coupons appertaining thereto as beneficiaries hereof with respect to the
property so deposited with the Trustee payable to all or any of them and (vi)
the obligations of the Issuer under Section 3.2) and the Trustee, at the expense
of the Issuer, shall at the Issuer's request execute proper instruments
acknowledging the same, if

                 (a) with reference to this provision the Issuer has irrevocably
         deposited or caused to be irrevocably deposited with the Trustee as
         trust funds in trust, specifically pledged as security for, and
         dedicated solely to, the benefit of the holders of the Securities of
         such series and Coupons appertaining thereto (i) cash, or (ii) U.S.
         Government Obligations, maturing as to principal and interest at such
         times and in such amounts as will insure the availability of cash or
         (iii) a combination thereof, in an amount sufficient, in the opinion of
         a nationally recognized firm of independent public accountants
         expressed in a written certification thereof delivered to the Trustee,
         to pay (A) the Principal and interest on all Securities of such series
         and Coupons appertaining thereto on the date that such principal or
         interest is due and payable and (B) any mandatory sinking fund payments
         on the day on which such payments are due and payable in accordance
         with the terms of the Indenture and the Securities of such series;

                 (b) such deposit will not result in a breach or violation of,
         or constitute a default under, any agreement or instrument to which the
         Issuer is a party or by which it is bound;

                 (c)  the Issuer has delivered to the Trustee an opinion of
         independent legal counsel satisfactory to the Trustee to the effect

<PAGE>   80

                                       72

         that Holders of the Securities of such series and Coupons appertaining
         thereto will not recognize income, gain or loss for Federal income tax
         purposes as a result of such deposit, defeasance and discharge and will
         be subject to Federal income tax on the same amount and in the same
         manner and at the same times, as would have been the case if such
         deposit, defeasance and discharge had not occurred; and

                    (d) the Issuer has delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that all conditions
         precedent provided for relating to the defeasance contemplated by this
         provision have been complied with, and the Opinion of Counsel shall
         also state that such deposit does not violate applicable law.

         SECTION 10.2 Application by Trustee of Funds Deposited for Payment of
Securities. Subject to Section 10.4, all moneys deposited with the Trustee
pursuant to Section 10.1 shall be held in trust and applied by it to the
payment, either directly or through any paying agent (including the Issuer
acting as its own paying agent), to the Holders of the particular Securities of
such series and of Coupons appertaining thereto for the payment or redemption of
which such moneys have been deposited with the Trustee, of all sums due and to
become due thereon for principal and interest; but such money need not be
segregated from other funds except to the extent required by law. Money or U.S.
Government Obligations so held in trust are not subject to the provisions of
Article 13.

         SECTION 10.3 Repayment of Moneys Held by Paying Agent. In connection
with the satisfaction and discharge of this Indenture with respect to Securities
of any series, all moneys then held by any paying agent under the provisions of
this Indenture with respect to such series of Securities shall, upon demand of
the Issuer, be repaid to it or paid to the Trustee and thereupon such paying
agent shall be released from all further liability with respect to such moneys.

         SECTION 10.4 Return of Moneys Held by Trustee and Paying Agent
Unclaimed for Two Years. Any moneys deposited with or paid to the Trustee or any
paying agent for the payment of the principal of or interest on any Security of
any series and not applied but remaining unclaimed for two years after the date
upon which such principal or interest shall have become due and payable, shall,
upon the written request of the Issuer and unless otherwise required by
mandatory provisions of applicable escheat or abandoned or unclaimed property
law, be repaid to the Issuer by the Trustee for such series or such paying
agent, and the Holder of the Security of such series shall, unless

<PAGE>   81

                                       73

otherwise required by mandatory provisions of applicable escheat or abandoned or
unclaimed property laws, thereafter look only to the Issuer for any payment
which such Holder may be entitled to collect, and all liability of the Trustee
or any paying agent with respect to such moneys shall thereupon cease; provided
the Trustee or such paying agent, before being required to make any such
repayment with respect to moneys deposited with it for any payment (a) in
respect of Registered Securities of any series, may at the expense of the
Issuer, mail by first class mail to Holders of such Securities at their
addresses as they shall appear on the Security register, and (b) in respect of
Unregistered Securities of any series, may at the expense of the Issuer cause to
be published once, in an Authorized Newspaper in London (and if required by
Section 3.8, once in an Authorized Newspaper in Luxembourg), notice, that such
moneys remain and that, after a date specified therein, which shall not be less
than thirty days from the date of such mailing or publication, any unclaimed
balance of such money then remaining will be repaid to the Issuer.

         SECTION 10.5 Indemnity for U.S. Government Obligations. The Issuer
shall pay and indemnify the Trustee against any tax, fee or other charge imposed
on or assessed against the U.S. Government Obligations deposited pursuant to
Section 10.1 or the principal or interest received in respect of such
obligations.

                                 ARTICLE ELEVEN

                            MISCELLANEOUS PROVISIONS

         SECTION 11.1 Incorporators, Shareholders, Officers and Directors of
Issuer Exempt from Individual Liability. No recourse under or upon any
obligation, covenant or agreement contained in this Indenture, or in any
Security or Coupon appertaining thereto, or because of any indebtedness
evidenced thereby, shall be had against any incorporator, as such or against any
past, present or future shareholder, officer or director, as such, of the Issuer
or of any successor, either directly or through the Issuer or any successor,
under any rule of law, statute or constitutional provision or by the enforcement
of any assessment or by any legal or equitable proceeding or otherwise, all such
liability being expressly waived and released by the acceptance of the
Securities and any Coupons appertaining thereto by the holders thereof and as
part of the consideration for the issue of the Securities and any Coupons
appertaining thereto.

<PAGE>   82

                                      74

         SECTION 11.2 Provisions of Indenture for the Sole Benefit of Parties
and Securityholders. Nothing in this Indenture or in the Securities and any
Coupons appertaining thereto, expressed or implied, shall give or be construed
to give to any person, firm or corporation, other than the parties hereto and
their successors and the Holders of the Securities or Coupons, any legal or
equitable right, remedy or claim under this Indenture or under any covenant or
provision herein contained, all such covenants and provisions being for the sole
benefit of the parties hereto and their successors and of the Holders of the
Securities.

         SECTION 11.3 Successors and Assigns of lssuer Bound by Indenture. All
the covenants, stipulations, promises and agreements in this Indenture contained
by or in behalf of the Issuer shall bind its successors and assigns, whether so
expressed or not.

         SECTION 11.4 Notices and Demands on Issuer, Trustee and
Securityholders. Any notice or demand which by any provision of this Indenture
is required or permitted to be given or served by the Trustee or by the Holders
of Securities or Coupons to or on the Issuer may be given or served by being
deposited postage prepaid, first-class mail (except as otherwise specifically
provided herein) addressed (until another address of the Issuer is filed by the
Issuer with the Trustee) to The Progressive Corporation, 6000 Parkland
Boulevard, Mayfield Heights, Ohio 44124, Attn: Treasurer. Any notice, direction,
request or demand by the Issuer or any Securityholder to or upon the Trustee
shall be deemed to have been sufficiently given or made, for all purposes, if
given or made at the Corporate Trust Office.

         Where this Indenture provides for notice to Holders, such notice shall
be sufficiently given (unless otherwise herein expressly provided) (i) in the
case of Holders of Registered Securities and Holders of Unregistered Securities
who have filed their names and addresses with the Trustee pursuant to Section
4.4(c)(ii), if in writing and mailed, first-class postage prepaid, to each
holder entitled thereto, at his last address as it appears in the registry
books; and (ii) in the case of holders of Unregistered Securities who have not
filed their names and addresses with the Trustee, by publication in accordance
with the requirements of the provision hereof requiring such notice. Any notice
which is mailed in the manner herein provided shall be conclusively presumed to
have been duly given when mailed, whether or not the Holder receives the notice.
In any case

<PAGE>   83

                                       75

where notice to Holders is given by mail, neither the failure to mail such
notice, nor any defect in any notice so mailed, to any particular holder shall
affect the sufficiency of such notice with respect to other Holders. Where this
Indenture provides for notice in any manner, such notice may be waived in
writing by the person entitled to receive such notice, either before or after
the event, and such waiver shall be the equivalent of such notice. Waivers of
notice by Holders shall be filed with the Trustee, but such filing shall not be
a condition precedent to the validity of any action taken in reliance upon such
waiver.

         In case, by reason of the suspension of or irregularities in regular
mail service, it shall be impracticable to mail notice to the Issuer and
Securityholders when such notice is required to be given pursuant to any
provision of this Indenture, then any manner of giving such notice as shall be
satisfactory to the Trustee shall be deemed to be a sufficient giving of such
notice.

         SECTION 11.5 Officers' Certificates and Opinions of Counsel; Statements
to Be Contained Therein. Upon any application or demand by the Issuer to the
Trustee to take any action under any of the provisions of this Indenture, the
Issuer shall furnish to the Trustee an Officers' Certificate stating that all
conditions precedent provided for in this Indenture relating to the proposed
action have been complied with and an Opinion of Counsel stating that in the
opinion of such counsel all such conditions precedent have been complied with,
except that in the case of any such application or demand as to which the
furnishing of such documents is specifically required by any provision of this
Indenture relating to such particular application or demand, no additional
certificate or opinion need be furnished.

         Each certificate or opinion provided for in this Indenture and
delivered to the Trustee with respect to compliance with a condition or covenant
provided for in this Indenture shall include (a) a statement that the person
making such certificate or opinion has read such covenant or condition, (b) a
brief statement as to the nature and scope of the examination or investigation
upon which the statements or opinions contained in such certificate or opinion
are based, (c) a statement that, in the opinion of such person, he has made such
examination or investigation as is necessary to enable him to express an
informed opinion as to whether or not such covenant or condition has been
complied with and (d) a statement as to whether or not, in the opinion of such
person, such condition or covenant has been complied with.

<PAGE>   84

                                       76

         Any certificate, statement or opinion of an officer of the Issuer may
be based, insofar as it relates to legal matters, upon a certificate or opinion
of or representations by counsel, unless such officer knows that the certificate
or opinion or representations with respect to the matters upon which his
certificate, statement or opinion may be based as aforesaid are erroneous, or in
the exercise of reasonable care should know that the same are erroneous. Any
certificate, statement or opinion of counsel may be based, insofar as it relates
to factual matters, information with respect to which is in the possession of
the Issuer, upon the certificate, statement or opinion of or representations by
an officer or officers of the Issuer, unless such counsel knows that the
certificate, statement or opinion or representations with respect to the matters
upon which his certificate, statement or opinion may be based as aforesaid are
erroneous, or in the exercise of reasonable care should know that the same are
erroneous.

         Any certificate, statement or opinion of an officer of the Issuer or of
counsel may be based, insofar as it relates to accounting matters, upon a
certificate or opinion of or representations by an accountant or firm of
accountants in the employ of the Issuer, unless such officer or counsel, as the
case may be, knows that the certificate or opinion or representations with
respect to the accounting matters upon which his certificate, statement or
opinion may be based as aforesaid are erroneous, or in the exercise of
reasonable care should know that the same are erroneous.

         Any certificate or opinion of any independent firm of public
accountants filed with the Trustee shall contain a statement that such firm is
independent.

         SECTION 11.6 Payments Due on Saturdays, Sundays and Holidays. If the
date of maturity of interest on or principal of the Securities of any series or
any Coupons appertaining thereto or the date fixed for redemption or repayment
of any such Security or Coupon shall not be a Business Day, then payment of
interest or principal need not be made on such date, but may be made on the next
succeeding Business Day with the same force and effect as if made on the date of
maturity or the date fixed for redemption, and no interest shall accrue for the
period after such date.

         SECTION 11.7 Conflict of Any Provision of Indenture with Trust
Indenture Act of 1939. If and to the extent that any provision of this Indenture
limits, qualifies or conflicts with another provision included in

<PAGE>   85

                                       77

this Indenture which is required to be included herein by any of Sections 310 to
317, inclusive, of the Trust Indenture Act of 1939, such required provision
shall control.

         SECTION 11.8 New York Law to Govern. This Indenture and each Security
and Coupon shall be deemed to be a contract under the laws of the State of New
York, and for all purposes shall be construed in accordance with the laws of
such State, except as may otherwise be required by mandatory provisions of law.

         SECTION 11.9 Counterparts. This Indenture may be executed in any number
of counterparts, each of which shall be an original; but such counterparts shall
together constitute but one and the same instrument.

         SECTION 11.10 Effect of Headings. The Article and Section headings
herein and the Table of Contents are for convenience only and shall not affect
the construction hereof.

         SECTION 11.11 Securities in Foreign Currencies or in ECU. Whenever this
Indenture provides for any action by, or the determination of any of the rights
of, or any distribution to, Holders of Securities denominated in United States
dollars and in any other currency or currency unit (including ECU), in the
absence of any provision to the contrary in the form of Security of any
particular series, any amount in respect of any Security denominated in a
currency or currency unit (including ECU) other than United States dollars shall
be treated for any such action or distribution as that amount of United States
dollars that could be obtained for such amount on such reasonable basis of
exchange and as of such date as the Issuer may specify in a written notice to
the Trustee or in the absence of such written notice, as the Trustee shall so
determine.

                                 ARTICLE TWELVE

                   REDEMPTION OF SECURITIES AND SINKING FUNDS

         SECTION 12.1 Applicability of Article. The provisions of this Article
shall be applicable to the Securities of any series which are redeemable before
their maturity or to any sinking fund for the retirement of Securities of a
series except as otherwise specified as contemplated by Section 2.3 for
Securities of such series.

<PAGE>   86

                                       78

         SECTION 12.2 Notice of Redemption; Partial Redemptions. Notice of
redemption to the Holders of Registered Securities of any series to be redeemed
as a whole or in part at the option of the Issuer shall be given by mailing
notice of such redemption by first class mail, postage prepaid, at least 30 days
and not more than 60 days prior to the date fixed for redemption to such Holders
of Securities of such series at their last addresses as they shall appear upon
the registry books. Notice of redemption to the Holders of Unregistered
Securities to be redeemed as a whole or in part, who have filed their names and
addresses with the Trustee pursuant to Section 4.4(c)(ii), shall be given by
mailing notice of such redemption, by first class mail, postage prepaid, at
least thirty and not more than sixty days prior to the date fixed for
redemption, to such Holders at such addresses as were so furnished to the
Trustee (and in the case of any such notice given by the Issuer, the Trustee
shall make such information available to the Issuer for such purpose). Notice of
redemption to all other holders of Unregistered Securities shall be published in
an Authorized Newspaper in London (and, if required by Section 3.6, in an
Authorized Newspaper in Luxembourg), in each case, once in each of two
successive calendar weeks, the first publication to be not less than thirty nor
more than sixty days prior to the date fixed for redemption. Any notice which is
mailed in the manner herein provided shall be conclusively presumed to have been
duly given, whether or not the Holder receives the notice. Failure to give
notice by mail, or any defect in the notice to the Holder of any Security of a
series designated for redemption as a whole or in part shall not affect the
validity of the proceedings for the redemption of any other Security of such
series.

         The notice of redemption to each such Holder shall specify the
principal amount of each Security of such series held by such Holder to be
redeemed, the date fixed for redemption, the redemption price, the place or
places of payment, that payment will be made upon presentation and surrender of
such Securities, and, in the case of Securities with Coupons attached thereto,
of all Coupons appertaining thereto maturing after the date fixed for
redemption, that such redemption is pursuant to the mandatory or optional
sinking fund, or both, if such be the case, that interest accrued to the date
fixed for redemption will be paid as specified in such notice and that on and
after said date interest thereon or on the portions thereof to be redeemed will
cease to accrue. In case any Security of a series is to be redeemed in part only
the notice of redemption shall state the portion of the principal amount thereof
to be redeemed and shall state that on and after the date fixed for redemption,
upon surrender of

<PAGE>   87

                                       79

such Security, a new Security or Securities of such series in principal amount
equal to the unredeemed portion thereof will be issued.

         The notice of redemption of Securities of any series to be redeemed at
the option of the Issuer shall be given by the Issuer or, at the Issuer's
request, by the Trustee in the name and at the expense of the Issuer.

         On the redemption date specified in the notice of redemption given as
provided in this Section, the Issuer will deposit with the Trustee or with one
or more paying agents (or, if the Issuer is acting as its own paying agent, set
aside, segregate and hold in trust as provided in Section 3.4) an amount of
money sufficient to redeem on the redemption date all the Securities of such
series so called for redemption at the appropriate redemption price, together
with accrued interest to the date fixed for redemption. If any or all of the
outstanding Securities of a series are to be redeemed, the Issuer will deliver
to the Trustee at least 70 days prior to the date fixed for redemption an
Officers' Certificate stating the date of redemption and the aggregate principal
amount of Securities to be redeemed.

         If less than all the Securities of a series are to be redeemed, the
Trustee shall select, in such manner as it shall deem appropriate and fair,
Securities of such series to be redeemed in whole or in part. Securities may be
redeemed in part in multiples equal to the minimum authorized denomination for
Securities of such series or any integral multiple thereof. The Trustee shall
promptly notify the Issuer in writing of the Securities of such series selected
for redemption and, in the case of any Securities of such series selected for
partial redemption, the principal amount thereof to be redeemed. For all
purposes of this Indenture, unless the context otherwise requires, all
provisions relating to the redemption of Securities of any series shall relate,
in the case of any Security redeemed or to be redeemed only in part, to the
portion of the principal amount of such Security which has been or is to be
redeemed.

         SECTION 12.3 Payment of Securities Called for Redemption. If notice of
redemption has been given as above provided, the Securities or portions of
Securities specified in such notice shall become due and payable on the date and
at the place stated in such notice at the applicable redemption price, together
with interest accrued to the date fixed for redemption, and on and after said
date (unless the Issuer shall default in the payment of such Securities at the
redemption price, together with interest accrued to said date) interest on the
Securities or portions of Securities so called for redemption shall cease to
accrue and the

<PAGE>   88

                                       80

unmatured Coupons, if any, appertaining thereto shall be void and, except as
provided in Sections 6.5 and 10.4, such Securities shall cease from and after
the date fixed for redemption to be entitled to any benefit or security under
this Indenture, and the Holders thereof shall have no right in respect of such
Securities except the right to receive the redemption price thereof and unpaid
interest to the date fixed for redemption. On presentation and surrender of such
Securities, together with all Coupons appertaining thereto maturing after the
date fixed for redemption, at a place of payment specified in said notice, said
Securities and Coupons or the specified portions thereof shall be paid and
redeemed by the Issuer at the applicable redemption price, together with
interest accrued thereon to the date fixed for redemption; provided that any
semiannual payment of interest becoming due on the date fixed for redemption
shall be payable in the case of Securities with Coupons attached thereto, to the
bearers of the Coupons for such interest upon surrender thereof, and in the case
of Registered Securities, to the Holders of such Securities registered as such
on the relevant record date subject to the terms and provisions of Section 2.4
hereof.

         If any Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal shall, until paid or duly
provided for, bear interest from the date fixed for redemption at the rate of
interest or Yield to Maturity (in the case of an Original Issue Discount
Security) borne by the Security.

         If any Security with Coupons attached thereto is surrendered for
redemption and is not accompanied by all such Coupons maturing after the date
fixed for redemption, the surrender of such missing Coupon or Coupons may be
waived by the Issuer and the Trustee, if there be furnished to each of them such
security or indemnity as they may require to save each of them harmless.

         Upon presentation of any Security redeemed in part only, the Issuer
shall execute and the Trustee shall authenticate and deliver to or on the order
of the Holder thereof, at the expense of the Issuer, a new Security or
Securities of such series, together with all Coupons, if any, appertaining
thereto, of authorized denominations, in principal amount equal to the
unredeemed portion of the Security so presented.

         SECTION 12.4 Exclusion of Certain Securities from Eligibility for
Selection for Redemption. Securities shall be excluded from eligibility for
selection for redemption if they are identified by registra-

<PAGE>   89

                                       81

tion and certificate number in a written statement signed by an authorized
officer of the Issuer and delivered to the Trustee at least 40 days prior to the
last date on which notice of redemption may be given as being owned of record
and beneficially by, and not pledged or hypothecated by either (a) the Issuer or
(b) an entity specifically identified in such written statement directly or
indirectly controlling or controlled by or under direct or indirect common
control with the Issuer.

         SECTION 12.5 Mandatory and Optional Sinking Funds. The minimum amount
of any sinking fund payment provided for by the terms of Securities of any
series is herein referred to as a "mandatory sinking fund payment", and any
payment in excess of such minimum amount provided for by the terms of Securities
of any series is herein referred to as an "optional sinking fund payment". The
date on which a sinking fund payment is to be made is herein referred to as the
"sinking fund payment date".

         In lieu of making all or any part of any mandatory sinking fund payment
with respect to any series of Securities in cash, the Issuer may at its option
(a) deliver to the Trustee Securities of such series theretofore purchased or
otherwise acquired (except upon redemption pursuant to the mandatory sinking
fund) by the Issuer or receive credit for Securities of such series (not
previously so credited) theretofore purchased or otherwise acquired (except as
aforesaid) by the Issuer and delivered to the Trustee for cancellation pursuant
to Section 2.7, (b) receive credit for optional sinking fund payments (not
previously so credited) made pursuant to this Section, or (c) receive credit for
Securities of such series (not previously so credited) redeemed by the Issuer
through any optional redemption provision contained in the terms of such series.
Securities so delivered or credited shall be received or credited by the Trustee
at the sinking fund redemption price specified in such Securities.

         On or before the sixtieth day next preceding each sinking fund payment
date for any series, the Issuer will deliver to the Trustee a written statement
(which need not contain the statements required by Section 11.5) signed by an
authorized officer of the Issuer (a) specifying the portion of the mandatory
sinking fund payment to be satisfied by payment of cash and the portion to be
satisfied by credit of Securities of such series, (b) stating that none of the
Securities of such series has theretofore been so credited, (c) stating that no
defaults in the payment of interest or Events of Default with respect to such
series have occurred

<PAGE>   90

                                       82

(which have not been waived or cured) and are continuing and (d) stating whether
or not the Issuer intends to exercise its right to make an optional sinking fund
payment with respect to such series and, if so, specifying the amount of such
optional sinking fund payment which the Issuer intends to pay on or before the
next succeeding sinking fund payment date. Any Securities of such series to be
credited and required to be delivered to the Trustee in order for the Issuer to
be entitled to credit therefore as aforesaid which have not theretofore been
delivered to the Trustee shall be delivered for cancellation pursuant to Section
2.10 to the Trustee with such written statement (or reasonably promptly
thereafter if acceptable to the Trustee). Such written statement shall be
irrevocable and upon its receipt by the Trustee the Issuer shall become
unconditionally obligated to make all the cash payments or payments therein
referred to, if any, on or before the next succeeding sinking fund payment date.
Failure of the Issuer, on or before any such sixtieth day, to deliver such
written statement and Securities specified in this paragraph, if any, shall not
constitute a default but shall constitute, on and as of such date, the
irrevocable election of the Issuer (i) that the mandatory sinking fund payment
for such series due on the next succeeding sinking fund payment date shall be
paid entirely in cash without the option to deliver or credit Securities of such
series in respect thereof and (ii) that the Issuer will make no optional sinking
fund payment with respect to such series as provided in this Section.

         If the sinking fund payment or payments (mandatory or optional or both)
to be made in cash on the next succeeding sinking fund payment date plus any
unused balance of any preceding sinking fund payments made in cash shall exceed
$50,000 (or a lesser sum if the Issuer shall so request) with respect to the
Securities of any particular series, such cash shall be applied on the next
succeeding sinking fund payment date to the redemption of Securities of such
series at the sinking fund redemption price together with accrued interest to
the date fixed for redemption. If such amount shall be $50,000 or less and the
Issuer makes no such request, then it shall be carried over until a sum in
excess of $50,000 is available. The Trustee shall select, in the manner provided
in Section 12.2, for redemption on such sinking fund payment date a sufficient
principal amount of Securities of such series to absorb said cash, as nearly as
may be, and shall (if requested in writing by the Issuer) inform the Issuer of
the serial numbers of the Securities of such series (or potions thereof) so
selected. Securities of any series which are (a) owned by the Issuer

<PAGE>   91

                                       83

or an entity known by the Trustee to be directly or indirectly controlling or
controlled by or under direct or indirect common control with the Issuer, as
shown by the Security register, and not know to the Trustee to have been pledged
or hypothecated by the Issuer or any such entity or (b) identified in an
Officers' Certificate at least 60 days prior to the sinking fund payment date as
being beneficially owned by, and not pledged or hypothecated by, the Issuer or
an entity directly or indirectly controlling or controlled by or under direct or
indirect common control with the Issuer shall be excluded from Securities of
such series eligible for selection for redemption. The Trustee, in the name and
at the expense of the Issuer (or the Issuer, if it shall so request the Trustee
in writing) shall cause notice of redemption of the Securities of such series to
be given in substantially the manner provided in Section 12.2 (and with the
effect provided in Section 12.3) for the redemption of Securities of such series
in part at the option of the Issuer. The amount of any sinking fund payments not
so applied or allocated to the redemption of Securities of such series shall be
added to the next cash sinking fund payment for such series and, together with
such payment, shall be applied in accordance with the provisions of this
Section. Any and all sinking fund moneys held on the stated maturity date of the
Securities of any particular series (or earlier, if such maturity is
accelerated), which are not held for the payment or redemption of particular
Securities of such series shall be applied, together with other moneys, if
necessary, sufficient for the purpose, to the payment of the principal of, and
interest on, the Securities of such series at maturity.

         On each sinking fund payment date, the Issuer shall pay to the Trustee
in cash or shall otherwise provide for the payment of all interest accrued to
the date fixed for redemption on Securities to be redeemed on the next following
sinking fund payment date.

         The Trustee shall not redeem or cause to be redeemed any Securities of
a series with sinking fund moneys or provide any notice of redemption of
Securities for such series by operation of the sinking fund during the
continuance of a default in payment of interest on such Securities or of any
Event of Default except that, where the mailing or publication of notice of
redemption of any Securities shall theretofore have been made, the Trustee shall
redeem or cause to be redeemed such Securities, provided that it shall have
received from the Issuer a sum sufficient for such redemption. Except as
aforesaid, any moneys in the sinking fund for such series at the time when any
such default or Event of Default

<PAGE>   92

                                       84

shall occur, and any moneys thereafter paid into the sinking fund, shall, during
the continuance of such default or Event of Default, be deemed to have been
collected under Article Five and held for the payment of all such Securities. In
case such Event of Default shall have been waived as provided in Section 5.10 or
the default cured on or before the sixtieth day preceding the sinking fund
payment date in any year, such moneys shall thereafter be applied on the next
succeeding sinking fund payment date in accordance with this Section to the
redemption of such Securities.

                                ARTICLE THIRTEEN

                            SUBORDINATION; SENIORITY

         SECTION 13.1 Securities Subordinated to Senior Indebtedness. The Issuer
agrees, and each Holder of the Securities by his acceptance thereof likewise
agrees, that the payment of the principal of and interest on Securities of any
series issued under this Indenture shall be subordinated and junior in right of
payment, to the extent and in the manner provided in this Article 13 to the
prior payment in full of all Senior Indebtedness whether outstanding on the date
hereof or hereafter created, incurred, assumed or guaranteed.

         The Senior Indebtedness of the Issuer shall continue to be Senior
Indebtedness and entitled to the benefits of these subordination provisions
irrespective of any amendment, modification or waiver of any term of any
instrument relating to the Senior Indebtedness or the extension or renewal of
the Senior Indebtedness.

         All the provisions of this Indenture and the Securities shall be
subject to the provisions of this Article 13 so far as they may be applicable
thereto, except that nothing in this Article 13 shall apply to claims for, or
payments to, the Trustee under or pursuant to Section 6.6.

         SECTION 13.2 Issuer Not to Make Payments with Respect to Securities in
Certain Circumstances. No payment shall be made by the Issuer on account of
principal of or interest on Securities of any series or on account of the
purchase or other acquisition of Securities of any series, if there shall have
occurred and be continuing a default with respect to any Senior Indebtedness
permitting the acceleration thereof or with respect to the payment of any Senior
Indebtedness and (a) such default is the subject of a judicial proceeding or (b)
notice of such default

<PAGE>   93

                                       85

in writing or by telegram has been given to the Issuer by any holder or holders
of any Senior Indebtedness (provided, however, that in the case of Senior
Indebtedness issued pursuant to an indenture such notice may be validly given
only by the trustee under such indenture), unless and until such default or
event of default shall have been cured or waived or shall have ceased to exist.

         Upon any acceleration of the principal of Securities of any series or
any payment by the Issuer, or distribution of assets of the Issuer of any kind
or character, whether in cash, property or securities, to creditors upon any
dissolution or winding up or liquidation or reorganization of the Issuer,
whether voluntary or involuntary, or in bankruptcy, insolvency, receivership or
other proceedings, all amounts due or to become due upon all Senior Indebtedness
shall first be paid in full in money or money's worth, or payment thereof
provided for, before any payment is made on account of the principal of or
interest on Securities of any series; and (subject to the power of a court of
competent jurisdiction to make other equitable provision, which shall have been
determined by such court to give effect to the rights conferred in this Article
upon the Senior Indebtedness and the holders thereof with respect to Securities
of any series or the Holders thereof or the Trustee, by a lawful plan of
reorganization or readjustment under applicable law) upon any such dissolution
or winding up or liquidation or reorganization, any payment by the Issuer, or
distribution of assets of the Issuer of any kind or character, whether in cash,
property or securities, to which the Holders of the Securities of any series or
the Trustee would be entitled except for the provisions of this Article, shall
be paid by the Issuer or by any receiver, trustee in bankruptcy, liquidating
trustee, agent or other Person making such payment or distribution directly to
the holders of Senior Indebtedness or their representative or representatives,
or to the trustee or trustees under any indenture pursuant to which any
instruments evidencing any Senior Indebtedness may have been issued, as their
respective interests may appear, to the extent necessary to pay all Senior
Indebtedness in full in money or money's worth, after giving effect to any
concurrent payment or distribution to or for the holders of Senior Indebtedness,
before any payment or distribution is made to the Holders of the Securities of
any series or to the Trustee.

         In the event that, notwithstanding the foregoing, any payment by or
distribution of assets of the Issuer of any kind or character, whether in cash,
property or securities, prohibited by the foregoing, shall be

<PAGE>   94

                                       86

received by the Trustee or the Holders of the Securities of any series before
all Senior Indebtedness is paid in full in money or money's worth, or provision
is made for such payment, and if such fact shall then have been or thereafter be
made known to the Trustee or, as the case may be, such Holder, then and in such
event such payment or distribution shall be paid over or delivered to the
holders of Senior Indebtedness or their representative or representatives, or to
the trustee or trustees under any indenture pursuant to which any instruments
evidencing any Senior Indebtedness may have been issued, as their respective
interests may appear, for application to the payment of all Senior Indebtedness
remaining unpaid to the extent necessary to pay all Senior Indebtedness in full
in money or money's worth, after giving effect to any concurrent payment or
distribution to or for the holders of such Senior Indebtedness, and, until so
delivered, the same shall be held in trust by any Holder of a Security as the
property of the holders of Senior Indebtedness.

         The consolidation of the Issuer with, or the merger of the Issuer into,
another corporation or the liquidation or dissolution of the Issuer following
the conveyance or transfer of its property as an entirety, or substantially as
an entirety, to another corporation upon the terms and conditions provided in
Article Nine shall not be deemed a dissolution, winding up, liquidation or
reorganization for the purposes of this Section if such other corporation shall,
as a part of such consolidation, merger, conveyance or transfer, comply with the
conditions stated in Article Nine. Nothing in this Section shall apply to claims
of, or payments to, the Trustee under or pursuant to Section 6.6.

         The holders of Senior Indebtedness may, at any time and from time to
time, without the consent of or notice to the Holders of the Securities of any
series, without incurring responsibility to the Holders of the Securities of any
series and without impairing or releasing the obligations of the Holders of the
Securities of any series to the holders of Senior Indebtedness: (i) change the
manner, place or terms of payment or change or extend the time of payment of, or
renew or alter, Senior Indebtedness, or otherwise amend in any manner Senior
Indebtedness or any instrument evidencing the same or any agreement under which
Senior Indebtedness is outstanding; (ii) sell, exchange, release or otherwise
deal with any property pledged, mortgaged or otherwise securing Senior
Indebtedness; (iii) release any Person liable in any manner for the collection
of Senior Indebtedness; and (iv) exercise or refrain from exercising any rights
against the Issuer and any other Person.

<PAGE>   95

                                       87

         SECTION 13.3 Subrogation of Securities. Subject to the payment in full
of all amounts then due (whether by acceleration of the maturity thereof or
otherwise) on account of the principal and interest on all Senior Indebtedness
at the time outstanding, the Holders of the Securities shall be subrogated to
the rights of the holders of Senior Indebtedness to receive payments or
distributions of cash, property or securities of the Issuer applicable to the
Senior Indebtedness until the principal and interest on the Securities shall be
paid in full; and, for the purposes of such subrogation, no payments or
distributions to the holders of Senior Indebtedness of any cash, property or
securities to which the Holders of the Securities of any series or the Trustee
would be entitled except for the provisions of this Article shall, as between
the Issuer, its creditors other than holders of Senior Indebtedness, and the
Holders of the Securities of any series, be deemed to be a payment by the Issuer
to or on account of the Senior Indebtedness. It is understood that the
provisions of this Article are and are intended solely for the purpose of
defining the relative rights of the Holders of the Securities, on the one hand,
and the holders of Senior Indebtedness, on the other hand.

         Nothing contained in this Article or elsewhere in this Indenture or in
the Securities of any series is intended to or shall impair, as among the
Issuer, its creditors other than the holders of Senior Indebtedness, and the
Holders of the Securities, the obligation of the Issuer, which is absolute and
unconditional, to pay to the Holders of the Securities the principal of and
interest on the Securities as and when the same shall become due and payable in
accordance with their terms, or is intended to or shall affect the relative
rights of the Holders of the Securities of any series and creditors of the
Issuer other than the holders of Senior Indebtedness, nor shall anything herein
or therein prevent the Trustee or the Holder of any Security from exercising all
remedies otherwise permitted by applicable law upon default under this
Indenture, subject to the rights, if any, under this Article of the holders of
Senior Indebtedness in respect of cash, property or securities of the Issuer
received upon the exercise of any such remedy.

         Upon any payment or distribution of assets of the Issuer referred to in
this Article, the Trustee, subject to the provisions of Section 6.1, and the
Holders of the Securities shall be entitled to rely upon any order or decree
made by any court of competent jurisdiction in which such

<PAGE>   96

                                       88

dissolution, winding up, liquidation or reorganization proceedings are pending,
or certificate of the receiver, trustee in bankruptcy, liquidating trustee,
agent or other Person making such payment or distribution, delivered to the
Trustee or to the Holders of the Securities, for the purpose of ascertaining the
persons entitled to participate in such distribution, the holders of Senior
Indebtedness and other indebtedness of the Issuer, the amount thereof or payable
thereon, the amount or amounts paid or distributed thereon and all other facts
pertinent thereto or to this Article.

         SECTION 13.4 Authorization by Holders of Securities. Each Holder of a
Security of any series by his acceptance thereof authorizes and directs the
Trustee on his behalf to take such action as may be necessary or appropriate to
effectuate, as between the Holder of the Security and the holders of Senior
Indebtedness, the subordination provided in this Article and appoints the
Trustee his attorney-in-fact for any and all such purposes.

         SECTION 13.5 Notices to Trustee. The Issuer shall give prompt written
notice to the Trustee of any fact known to the Issuer which would prohibit the
making of any payment of moneys to or by the Trustee in respect of the
Securities of any series pursuant to the provisions of this Article.
Notwithstanding the provisions of this Article or any other provision of this
Indenture, the Trustee shall not be charged with knowledge of the existence of
any facts which would prohibit the making of any payment of moneys to or by the
Trustee in respect of the Securities of any series pursuant to the provisions of
this Article, unless and until the Trustee shall have received at its Corporate
Trust Office written notice thereof from the Issuer or a holder or holders of
Senior Indebtedness or from any trustee therefore; and, prior to the receipt of
any such written notice, the Trustee, subject to the provisions of Section 6.1,
shall be entitled in all respects to assume that no such facts exist; provided,
however, that if the Trustee shall not have received at least three Business
Days prior to the date upon which by the terms hereof any such moneys may become
payable for any purpose (including, without limitation, the payment of the
principal or interest on any Security of any series) with respect to such moneys
the notice provided for in this Section, then, anything herein contained to the
contrary notwithstanding, the Trustee shall have full power and authority to
receive such moneys and to apply the same to the purpose for which they were
received and shall

<PAGE>   97

                                       89

not be affected by any notice to the contrary which may be received by it within
three Business Days prior to such date.

         The Trustee shall be entitled to rely on the delivery to it of a
written notice by a Person representing himself to be a holder of Senior
Indebtedness (or a trustee on behalf of such holder) to establish that such
notice has been given by a holder of Senior Indebtedness or a trustee on behalf
of any such holder. In the event that the Trustee determines in good faith that
further evidence is required with respect to the right of any Person as a holder
of Senior Indebtedness to participate in any payment or distribution pursuant to
this Article, the Trustee may request such Person to furnish evidence to the
reasonable satisfaction of the Trustee as to the amount of Senior Indebtedness
held by such Person, the extent to which such Person is entitled to participate
in such payment or distribution and any other facts pertinent to the rights of
such Person under this Article, and if such evidence is not furnished, the
Trustee may defer any payment to such Person pending judicial determination as
to the right of such Person to receive such payment.

         SECTION 13.6 Trustee's Relation to Senior Indebtedness. The Trustee in
its individual capacity shall be entitled to all the rights set forth in this
Article in respect of any Senior Indebtedness at any time held by it, to the
same extent as any other holder of Senior Indebtedness, and nothing in Section
6.13 or elsewhere in this Indenture shall deprive the Trustee of any of its
rights as such holder.

         With respect to the holders of Senior Indebtedness, the Trustee
undertakes to perform or to observe any such of its covenants and obligations as
are specifically set forth in this Article, and no implied covenants or
obligations with respect to the holders of Senior Indebtedness shall be read
into this Indenture against the Trustee. The Trustee shall not owe any fiduciary
duty to the holders of Senior Indebtedness but shall have only such obligations
to such holders as are expressly set forth in this Article.

         SECTION 13.7 No Impairment of Subordination. No right of any present or
future holder of any Senior Indebtedness to enforce subordination as herein
provided shall at any time in any way be prejudiced or impaired by any act or
failure to act on the part of the Issuer or by any act or failure to act, in
good faith, by any such holder, or by any noncompliance by the Issuer with the
terms, provisions and

<PAGE>   98

                                       90

covenants of this Indenture, regardless of any knowledge thereof which any such
holder may have or otherwise be charged with.

         SECTION 13.8 Article 13 Not To Prevent Events of Default. The failure
to make a payment on account of principal or interest on the Securities by
reason of any provision in this Article 13 shall not be construed as preventing
the occurrence of an Event of Default under Section 5.1.

         SECTION 13.9 Paying Agents other than the Trustee. In case at any time
any Paying Agent other than the Trustee shall have been appointed by the Issuer
and be then acting hereunder, the term "Trustee" as used in this Article 13
shall in such case (unless the context shall otherwise require) be construed as
extending to and including such Paying Agent within its meaning as fully for all
intents and purposes as if such Paying Agent were named in this Article 13 in
addition to or in place of the Trustee; provided, however, that Sections 13.5
and 13.6 hereof shall not apply to the Issuer or any Subsidiary if it acts as
Paying Agent.

         SECTION 13.10 Securities Senior to Subordinated Indebtedness. The
indebtedness represented by the Securities will be senior and prior in right of
payment to the principal and interest on all Subordinated Indebtedness, to the
extent and in the manner provided in such Subordinated Indebtedness.

<PAGE>   99

                                       91

         IN WITNESS WHEREOF, the parties hereto have caused this Indenture to be
duly executed, and their respective corporate seals to be hereunto affixed and
attested, all as of November 15, 1988.

                                           THE PROGRESSIVE CORPORATION
[CORPORATE SEAL]
                                           By
                                           -------------------------------------
                                           Treasurer

Attest:

By
   --------------------------------------

                                           RHODE ISLAND HOSPITAL TRUST
                                             NATIONAL BANK

[CORPORATE SEAL]
                                           By
                                           -------------------------------------

Attest:
By
   --------------------------------------

<PAGE>   100

                                       92

STATE OF NEW YORK
COUNTY OF NEW YORK        ss.:

        On this ____ day of ______ before me personally came Howard M. Zelikow,
to me personally known, who, being by me duly sworn, did depose and say that he
resides at Cleveland, Ohio
                          ; that he is an officer of THE PROGRESSIVE
CORPORATION, one of the corporations described in and which executed the above
instrument; that he knows the corporate seal of said corporation; that the seal
affixed to said instrument is such corporate seal; that it was so affixed by
authority of the Board of Directors of said corporation, and that he signed his
name thereto by like authority.

                                           -------------------------------------
                                           Notary Public
[NOTARIAL SEAL]

STATE OF NEW YORK
COUNTY OF NEW YORK        ss.:

        On this day of , before me personally came , to me personally known,
who, being by me duly sworn, did depose and say that he resides at New York, New
York; that he is an of RHODE ISLAND HOSPITAL TRUST NATIONAL BANK, one of the
corporations described in and which executed the above instrument; that he knows
the corporate seal of said corporation; that the seal affixed to said instrument
is such corporate seal; that it was so affixed by authority of the Board of
Directors of said corporation, and that he signed his name thereto by like
authority.

                                           -------------------------------------
                                           Notary Public

[NOTARIAL SEAL]

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00006-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00006-of-00352.parquet"}]]