<PAGE>   1


                                                                     EXHIBIT 4.1

[NUMBER]                                                                [SHARES]
                                 [WMA GRAPHIC]

                              THE WMA CORPORATION

INCORPORATED UNDER THE LAWS OF
   THE STATE OF DELAWARE

                                             SEE REVERSE FOR CERTAIN DEFINITIONS
                                                       CUSIP 928970 10 2

THIS CERTIFIES that


is the owner of

             FULLY PAID AND NON-ASSESSABLE SHARES OF COMMON STOCK,
                         PAR VALUE $.001 PER SHARE, OF

THE WMA CORPORATION transferable only on the books of the Corporation by the 
holder hereof, in person or by attorney, upon surrender of this Certificate 
properly endorsed.

This Certificate is not valid unless countersigned by the Transfer Agent and 
registered by the Registrar.

IN WITNESS WHEREOF, the said Corporation has caused this Certificate to be 
signed with the facsimile signatures of its duly authorized officers, and its 
facsimile seal to be hereunto affixed.

Dated
      /s/ THOMAS W. MONTGOMERY                       /s/ S. HUBERT HUMPHREY, JR.
      ------------------------                      ----------------------------
          Secretary                                        President

                                   [WMA SEAL]


COUNTERSIGNED AND REGISTERED:

        AMERICAN STOCK TRANSFER & TRUST COMPANY
                (NEW YORK, NEW YORK)
                   TRANSFER AGENT AND REGISTRAR
                          


AUTHORIZED SIGNATURE
<PAGE>   2


                              THE WMA CORPORATION

     The following abbreviations, when used in the inscription on the face of 
this certificate, shall be construed as though they were written out in full 
according to applicable laws or regulations:

<TABLE>
<CAPTION>
<S>                                                              <C>
TEN COM --as tenants in common                                   UNIF GIFT MIN ACT--

TEN ENT --as tenants by the entireties                           ___________________________________________as custodian for

JT TEN  --as joint tenants with right of survivorship and        -----------------------------------------------------------
          not as tenants in common                                                         (Minor)

                                                                              under Uniform Gifts to Minors Act of

                                                                  -----------------------------------------------------------
                                                                                            (State)

</TABLE>

     Additional abbreviations may also be used though not in the above list


For value received, ________ hereby sell, assign and transfer unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
   IDENTIFYING NUMBER OF ASSIGNEE
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 (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE)

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                                                                          shares
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of the capital stock represented by this Certificate, and do hereby irrevocably 
constitute and appoint

                                                                       attorney
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to transfer such stock on the books of the Corporation with full power of 
substitution in the premises.

Dated
     --------------------------



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       NOTICE: The signature to this assignment must correspond with the
               name as written upon the face of the certificate in every
               particular, without alteration or enlargement or any
               change whatever



SIGNATURE(S) GUARANTEED:
                        -------------------------------------------------
                        The signature(s) should be guaranteed by an
                        eligible Guarantor institution (banks,
                        stockbrokers, Savings and Loan Associations and
                        Credit Unions with membership in an approved
                        signature guarantee Medallion program) pursuant
                        to S.E.C. Rule 17 Ad-15.