Document:

CERTIFICATE NO. ______                             CERTIFICATE FOR ______ RIGHTS

                     RIGHTS CERTIFICATE EVIDENCING RIGHTS TO
                                    PURCHASE
                          SHARES OF BENEFICIAL INTEREST

                           ($1.00 par value per Share)
                                       OF
                              WINTHROP REALTY TRUST
       (formerly FIRST UNION REAL ESTATE EQUITY AND MORTGAGE INVESTMENTS)
                 (Organized Under the Laws of the State of Ohio)

      THE TERMS AND CONDITIONS OF THE RIGHTS OFFERING ARE SET FORTH IN THE
PROSPECTUS, DATED MARCH __, 2006 (THE "PROSPECTUS"), OF WINTHROP REALTY TRUST
AND ARE INCORPORATED HEREIN BY REFERENCE. COPIES OF THE PROSPECTUS ARE AVAILABLE
UPON REQUEST FROM NATIONAL CITY BANK, AS SUBSCRIPTION AGENT (THE "SUBSCRIPTION
AGENT").

      THIS RIGHTS CERTIFICATE OR A NOTICE OF GUARANTEED DELIVERY MUST BE
RECEIVED BY THE SUBSCRIPTION AGENT WITH PAYMENT IN FULL BY 5:00 P.M., NEW YORK
CITY TIME, ON APRIL 27, 2006, UNLESS EXTENDED BY THE COMPANY (THE "EXPIRATION
TIME"). THE ABILITY OF THE HOLDER HEREOF TO EXERCISE RIGHTS PURSUANT TO THE
BASIC SUBSCRIPTION (AS DESCRIBED BELOW) OR TO PURCHASE COMMON SHARES PURSUANT TO
THE OVERSUBSCRIPTION PRIVILEGE (AS DESCRIBED BELOW) WILL EXPIRE AT THE
EXPIRATION TIME. RIGHTS NOT EXERCISED PRIOR TO THE EXPIRATION TIME WILL NO
LONGER BE EXERCISABLE AND WILL HAVE NO VALUE. ANY EXERCISE OF RIGHTS PURSUANT TO
THE BASIC SUBSCRIPTION AND ANY EXERCISE OF THE OVERSUBSCRIPTION PRIVILEGE ARE
REVOCABLE PRIOR TO THE EXPIRATION TIME.

      THIS CERTIFIES THAT_______________________________________________________
is the registered holder of the number of non-transferable rights set forth
above (the "Rights"), each of which entitles such owner to subscribe for and
purchase (the "Basic Subscription") one Share of Beneficial Interest, $1.00 par
value per share (the "Common Shares"), of Winthrop Realty Trust, a real estate
investment trust organized under the laws of the State of Ohio (the "Company"),
upon the terms and subject to the conditions set forth in the Prospectus and the
accompanying Instructions as to Use of Rights Certificates (the "Instructions").
The subscription price for each Right is $5.25 (the "Subscription Price"). Only
holders of Common Shares and holders of Series B-1 Cumulative Convertible
Redeemable Preferred Shares at the close of business on March 22, 2006 (the
"Record Date") are entitled to exercise Rights pursuant to the Basic
Subscription.

      The Rights will expire at 5:00 p.m., New York City Time, on April 27,
2006, or such later time and date as the Company may determine in its sole
discretion (the "Expiration Time"). The Rights are only exercisable upon the
terms specified herein, in the Prospectus and in the Instructions. The Rights
are not transferable, except by operation of law. Subject to the conditions set
forth in the Prospectus, the valid exercise of all of the Rights represented by
this Rights Certificate shall also entitle the holder thereof to subscribe for
and purchase Common Shares not purchased by the other holders of Rights through
their exercise of such Rights (the "Oversubscription Privilege"). If a holder
elects to exercise the Oversubscription Privilege, such holder must do so
concurrently with its exercise of the Basic Subscription.

      The holder of this Rights Certificate, as such, shall not be entitled to
vote or receive dividends or be deemed for any purpose the holder of the Common
Shares which may at any time be issuable upon the exercise hereof, nor shall
anything contained herein be construed to confer upon the holder hereof, as
such, any of the rights of a shareholder of the Company or any right to vote for
the election of trustees or upon any matter submitted to shareholders at any
meeting of the Company, or to give or withhold consent to any trust action, or
to receive notice of meetings or other actions affecting shareholders, or
otherwise, until all or a portion of the Rights evidenced by this Rights
Certificate have been exercised, payment in full of the Subscription Price for
the Common Shares subscribed for has been made, all necessary documentation has
been received by the Company and the Common Shares have been issued.

      The Rights represented by this Rights Certificate may be executed by
completing the appropriate sections on the reverse side hereof and by returning
the full payment for the shares subscribed for under the Basic Subscription (the
"Basic Subscription Payment") in accordance with the Instructions.

<PAGE>

      This Rights Certificate shall not be valid for any purpose unless
countersigned by the Subscription Agent.

      WITNESS the facsimile seal of the Company and facsimile signature of the
proper officers thereof.

DATED: March 22, 2006

                                             WINTHROP REALTY TRUST

                                             By:
                                                 -------------------------------
                                             Chief Executive Officer

                                             Attest:

                                             -----------------------------------
                                             Secretary

                                             COUNTERSIGNED:

                                             NATIONAL CITY BANK,
                                             as Subscription Agent

                                             By:
                                                 -------------------------------

                                       2
<PAGE>

                                    (REVERSE)

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                      BOX 1 --- BASIC SUBSCRIPTION EXERCISE

      TO EXERCISE THE BASIC SUBSCRIPTION, complete this Box 1 and Boxes 4 and 5
below and return this Rights Certificate, with the Basic Subscription Payment,
to National City Bank at the address set forth below.

Number of Rights Exercised: _____________________________

Payment due on exercise of the Basic Subscription is number of Rights exercised
above x $5.25 = $______________________.

|_|   Check here if Rights are being exercised pursuant to a Notice of
      Guaranteed Delivery delivered to the Subscription Agent prior to the
      Expiration Time and complete the Notice of Guaranteed Delivery provided
      with the Prospectus.

Method of Payment (check one):

|_|   Uncertified Check. Please note that funds paid by uncertified personal
      check may take at least five business days to clear. If your funds do not
      clear your bank before Expiration Time, your request for shares will not
      be accepted.

|_|   Certified Check or Bank Check drawn on a U.S. bank or Money Order payable
      to National City Bank.

|_|   Wire transfer directed to the National City Bank. (Call (800) 622-6757 for
      wire instructions.)

      If the amount enclosed or transmitted is not sufficient to fulfill the
Basic Subscription Payment for all Common Shares, or if the number of Common
Shares being subscribed for is not specified, the number of Common Shares
subscribed for will be assumed to be the maximum number that could be subscribed
for upon payment of such amount under the Basic Subscription. If the amount
enclosed or transmitted exceeds the aggregate Subscription Price for all Common
Shares that the undersigned has the right to purchase pursuant to the Basic
Subscription (the "Subscription Excess"), the Subscription Agent shall return
the Subscription Excess to the subscriber without interest or deduction.
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                  BOX 2 -- OVERSUBSCRIPTION PRIVILEGE EXERCISE

      TO EXERCISE THE OVERSUBSCRIPTION PRIVILEGE, complete this Box 2 as well as
Boxes 1, 4 and 5, and, if applicable, Box 3. You may not exercise the
Oversubscription Privilege unless you have satisfied the conditions set forth in
the Prospectus and exercised your Basic Subscription in full or, in the case of
securities held in street name, the particular beneficial owner has exercised
its Basic Subscription in full. (The actual number of Common Shares available
for purchase will depend upon the number of Rights exercised by all holders
pursuant to the Basic Subscription and the other shareholders exercising the
Oversubscription Privilege, and is subject to proration and reduction as
described in the Prospectus.)

Number of Common Shares Subscribed for under Oversubscription Privilege:
_______________*

Payment for shares subscribed to under the Oversubscription Privilege is not due
until five business days after notification of how many shares have been
allocated to you under the Oversubscription Privilege. At such time, you will be
obligated to deliver payment equal to the number of Common Shares subscribed for
that are allocated to you under the Oversubscription Privilege x $5.25 per
Common Share.

* Subject to proration and reduction by the Company under certain circumstances
as described in the Prospectus.
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                                       3
<PAGE>

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                          BOX 3 -- 9.8% WAIVER REQUEST

      If you anticipate that the exercise of your Rights will result in your
beneficially owning in excess of 9.8% of Winthrop's common shares you must
request a waiver from the 9.8% limitation contained in Winthrop's declaration of
trust and by-laws by checking this box*: |_|

* Please see the Instructions for guidance on determining whether you will need
  to request a waiver.
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  BOX 4 -- SIGNATURE, PAYMENT INSTRUCTIONS; REPRESENTATIONS AND WARRANTIES AND
                                 CERTIFICATIONS

    Payment in Full for All Common Shares Subscribed for under Section 1 Must
                        Accompany this Rights Certificate

      Total payment due under Box 1 = $_______________.

      I hereby represent, warrant and certify that (i) I have been provided with
a copy of each of the Prospectus and the Instructions, (ii) I hereby subscribe
for the number of Common Shares indicated in Boxes 1 and 2 on the terms and
conditions set forth in the Prospectus and in the Instructions, (iii) I hereby
tender the aggregate Basic Subscription Payment, and (iv) I hereby agree to pay
for all shares allocated to me under the Oversubscription Privilege within five
business days following the notification informing me how many shares that I
subscribed for under Box 2 have been allocated to me.

      I understand that my Rights will be deemed exercised only when, subject to
certain conditions described in the Prospectus, a properly completed and duly
executed Rights Certificate and payment of the full Subscription Price with
respect to such exercise have been received by the Subscription Agent.

      IMPORTANT - RIGHTS HOLDERS SIGN HERE AND COMPLETE SUBSTITUTE FORM W-9
                               IN SECTION 5 BELOW

Authorized Signature(s) of Subscriber(s):_______________________________________

Print Name(s): _________________________________________________________________

Address: _______________________________________________________________________
                                (Including Zip Code)

Telephone Number(s): (_____) __________________; (_____) __________________

(Must be signed by the Rights Holder(s) exactly as name(s) appear(s) on this
Rights Certificate. If signature is by trustee(s), executor(s),
administrator(s), guardian(s), attorney(s)-in-fact, agent(s), officer(s) of a
corporation or another acting as a fiduciary or representative capacity, please
provide the following information. See Instructions.)

Authorized Signature(s):________________________________________________________

Print Name(s):__________________________________________________________________

Capacity:_______________________________________________________________________

Address:________________________________________________________________________

________________________________________________________________________________
(Including Zip Code)

Telephone Number(s): (_____) __________________; (_____) __________________
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                                       4
<PAGE>

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      Please mail or deliver check or money order or wire transfer cash payable
to National City Bank, for the aggregate Subscription Price due under the Basic
Subscription to the Subscription Agent at the appropriate address below:

If by mail:             If by hand:                     If by Overnight Courier:
-----------             -----------                     ------------------------

National City Bank      c/o The Depository Trust        National City Bank
Corporate Actions       Company                         Corporate Actions
Processing Center       Transfer Agent Drop Service     Processing Center
P.O. Box 859208         55 Water Street                 161 Bay State Drive
Braintree, MA           Jeanette Park Entrance          Braintree, MA  02184
02185-9208              New York, NY  100041

                        or

                        National City Bank
                        Corporate Trust Operations
                        3rd floor - North Annex
                        4100 West 150th Street
                        Cleveland, OH  44135

      The Subscription Agent's facsimile number for eligible institutions only
is (781)380-3388. The telephone number for confirmation of receipt of facsimiles
is (781)843-1833 x200.

      If you have any questions, please call our Information Agent, MacKenzie
Partners, Inc., toll free at (800) 322-2885 or (212) 929-5500 (collect) or via
email at proxy@mackenziepartners.com.
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                          BOX 5 -- SUBSTITUTE FORM W-9

  PLEASE CERTIFY YOUR TAXPAYER I.D. OR SOCIAL SECURITY NUMBER BY SIGNING BELOW

Insert correct
Taxpayer I.D.
Number here:                                             |_|_|_|_|_|_|_|_|_|_|_|

Under penalties of perjury, I certify that:

1.    The number shown on this form is my correct taxpayer identification number
      (or I am waiting for a number to be issued to me), and

2.    I am not subject to backup withholding because (a) I am exempt from backup
      withholding, or (b) I have not been notified by the Internal Revenue
      Service (IRS) that I am subject to backup withholding as a result of a
      failure to report all interest or dividends, or (c) the IRS has notified
      me that I am no longer subject to backup withholding and

3.    I am a U.S. person (including a U.S. resident alien).

Certification Instructions. You must cross out Item 2 above if you have been
notified by the IRS that you are currently subject to backup withholding because
you have failed to report all interest and dividends on your tax return.

Signature: __________________________________   Date: __________________________
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                                       5
<PAGE>

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                         BOX 6 -- DELIVERY INSTRUCTIONS

  (Fill out ONLY if delivery is to be made to an address not shown on the face
                          of this Rights Certificate.)

Name(s): _______________________________________________________________________

Address: _______________________________________________________________________

                           Special Guarantee Medallion

              ____________________________________________________
                    (Title of Officer Signing this Guarantee

              ____________________________________________________
                        (Name of Guarantor - Please Print

              ____________________________________________________
                           (Address of Guarantor Firm

              ____________________________________________________

              ____________________________________________________

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Acceptance or rejection by the Company of the subscription specified on this
Rights Certificate shall be effective in accordance with the terms set forth in
the Prospectus and the Instructions. Exercise of the Rights represented hereby
shall not be deemed complete, the registered holder of the Rights whose name is
inscribed hereon shall have no binding right to become the legal or beneficial
owner of Common Shares issuable upon exercise of the Rights evidenced hereby,
unless and/or until (i) the Expiration Time occurs and (ii) the other conditions
to exercise described in the Prospectus and the Instructions are satisfied. All
questions concerning the timeliness, validity, form and eligibility of any
exercise of Rights will be determined by the Company, whose determination shall
be final and binding.

                                       6March    , 2006

Winthrop Realty Trust
7 Bulfinch Place, Suite 500
Boston, Massachusetts 02114

Gentlemen:

The undersigned (the "Purchaser") is the beneficial owner of common shares of
Beneficial Interest ("Common Shares") and/or Series B-1 Cumulative Redeemable
Preferred Shares ("Preferred Shares") of Winthrop Realty Trust (the "Company").
The Purchaser understands that on February 6, 2006, the Company filed a
Registration Statement on Form S-3 (the "Registration Statement") with the
Securities and Exchange Commission relating to the distribution of
non-transferable subscription rights (the "Rights") to purchase up to 5,220,038
Common Shares to be issued to all holders of Common Shares and Preferred Shares
as of March 22, 2006 ("Shareholders") (such offering is hereafter referred to as
the "Rights Offering"). Each Shareholder will receive one Right for every 12
Common Shares (including Common Shares underlying Preferred Shares) owned by
such Shareholder and each Right will entitle the holder to purchase one Common
Share for $5.25 per Share (the "Per Share Purchase Price"). The Purchaser also
understands that shareholders that exercise all of the Rights distributed to
them (the "Basic Subscription Right") will be entitled to purchase additional
Common Shares not subscribed for by other Shareholders pursuant to the
oversubscription right that is more fully described in the Registration
Statement (the "Oversubscription Right"). The Purchaser further understands that
the Company may cancel or terminate the Rights Offering at any time prior to the
expiration of the Rights Offering. The Purchaser also understands that on or
about the date hereof the Company is entering into agreements, similar to this
agreement (together with this Agreement, the "Standby Agreements"), for the
purchase of Common Shares with various other shareholders of the Company
(together with the Purchaser, the "Standby Purchasers").

In order to induce the Company to commence the Rights Offering, the Purchaser
agrees that in the event the Rights Offering is not fully subscribed, the
Purchaser will purchase ______ newly issued Common Shares (the "Initial Amount")
at the Per Share Purchase Price. The amount of Common Shares that the Purchaser
shall be obligated to purchase under this Agreement (such amount being referred
to as "Standby Shares") shall be reduced to the extent that the Purchaser
acquires Common Shares pursuant to its Basic Subscription Right and
Oversubscription Right and will be further reduced to the extent such shares
would not have been available for purchase by the Purchaser had all Standby
Purchasers subscribed for their full "Initial Amount" in the Rights Offering.
Delivery and payment for the Standby Shares will take place promptly following
the closing of the sale of shares pursuant to the Oversubscription Rights (the
"Closing").

<PAGE>

The Company agrees to waive its ownership limitation set forth in Article VI,
Section 6 of the Company's By-Laws to the extent necessary to allow the
Purchaser to purchase the Standby Shares provided that the Purchaser executes an
ownership waiver agreement satisfactory to the Company.

The Standby Shares shall be issued by the Company under that certain
registration statement on Form S-3 (No. 333-125987) originally filed with the
Securities and Exchange Commission on June 21, 2005, as the same may be amended
and supplemented through one or more prospectus supplements or post-effective
amendments and through any documents incorporated therein by reference (the
"Shelf Registration Statement"). All Standby Shares shall be listed on the New
York Stock Exchange as of the date of the Closing.

The Company represents and warrants that, as of the date hereof, the Shelf
Registration Statement does not include any untrue statement of a material fact
or omit to state any material fact required to be stated therein or necessary to
make the statements therein not misleading, and, as of the date of the Closing,
the Shelf Registration Statement and the prospectus included therein will not
include any untrue statement of a material fact or omit to state any material
fact required to be stated therein or necessary to make the statements therein
not misleading.

Assuming the accuracy of the immediately preceding paragraph, the Purchaser
confirms and acknowledges that the Purchaser possesses all information it
requires in order to make its decision to enter into this letter agreement.

The Purchaser may terminate this letter agreement if, prior to the Closing, any
event shall have occurred (other than changes in general economic conditions)
that had a material adverse effect on the business, assets, liabilities or
results of operations of the Company and its subsidiaries, taken as a whole.

This letter agreement sets forth the entire agreement of the Company and the
Purchaser with respect to the subject matter hereof. Any prior agreements or
understandings among the Purchaser and the Company regarding the subject matter
hereof, whether written or oral, are superseded by this letter agreement. No
amendment or waiver of any provision of this letter agreement shall be effective
unless the same shall be in writing and signed by the Purchaser and the Company.
This letter agreement shall be governed by and construed, interpreted and
enforced in accordance with the laws of the State of New York, without giving
effect to any of

                                       2
<PAGE>

the conflicts of laws provisions thereof that would require the application of
the substantive laws of any other jurisdiction.

                                            [PURCHASER]

                                            By:
                                                --------------------------------
                                                Name:
                                                Title:

Accepted and Agreed to:

Winthrop Realty Trust

By:
    ------------------------------
    Name:
    Title:

                                       3

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