Exhibit 2.1

                        CROWN CORK & SEAL COMPANY, INC.
                               9300 ASHTON ROAD
                            PHILADELPHIA, PA  19136


Compagnie Generale d'Industrie et
de Participations
89, rue Taitbout
75009 Paris, France

Gentlemen:

     Reference is made to the Exchange Offer Agreement dated as of May 22, 1995,
as amended as of November 13, 1995 (the "Exchange Offer Agreement"), between
Crown Cork & Seal Company, Inc. ("Crown") and Compagnie Generale d'Industrie et
de Participations ("CGIP").  This letter amends the Exchange Offer Agreement as
set forth herein.  Capitalized terms used but not otherwise defined herein have
the meanings ascribed thereto in the Exchange Offer Agreement.

     Section 1(h) of the Exchange Offer Agreement is hereby amended and restated
in its entirety as follows:

          "Company Options.  Subject to applicable law and regulation, and
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          subject to the terms of the Company's employee stock options
          outstanding on the date of this Agreement, and the New Options and the
          1994 Options to the extent issued in accordance with this Agreement
          (the outstanding options, the New Options and the 1994 Options are
          collectively referred to as the "Outstanding Options"), on the
          Commencement Date, Crown shall make an irrevocable offer to each
          holder of Outstanding Options in the categories specified in (i) and
          (ii) below, subject in all cases to successful completion of the
          Offer, and evidenced solely by delivery by Crown of a letter addressed
          to Company option holders at the Company's headquarters at 153, rue de
          Courcelles, 75817 Paris FRANCE c/o Chief Financial Officer, to settle
          such holder's Outstanding Options (or in the case of clause (ii)
          below, the shares of Common Stock received upon exercise of such
          Outstanding Options) in such categories, as follows:

               (i)  For each Outstanding Option that (a) is outstanding on the

 
               Commencement Date and (b) was granted less than three years prior
               to the expiration date of the Offer period (other than in the
               limited case where no three year non-exercisability period
               applied to such option), Crown will offer the holder a cash
               indemnity in exchange for the termination of the holder's rights
               under such option, which cash indemnity shall be in an amount
               equal to the difference between the Cash Election Price and the
               exercise price of the applicable option; provided that the cash
               indemnity will in no event exceed the amount specified above and
               no payment shall be made for taxes, social contributions or other
               costs; and

               (ii) For each Outstanding Option that (a) is outstanding on the
               Commencement Date, (b) is held by a person who is a French tax
               resident as of the Commencement Date and (c) was granted at least
               three years but less than five years prior to the expiration date
               of the Offer period (or granted less than five years prior to the
               expiration date of the Offer period in the limited case where no
               three year non-exercisability period applied to such option),
               Crown will offer the holder the right to "put" the shares of
               Common Stock received upon exercise of such Outstanding Option in
               accordance with its terms to Crown, free and clear of any lien or
               other encumbrance, at a price per share of Common Stock so
               received equal to the Cash Election Price plus interest
               calculated at a rate equal to 6% per annum (subject to adjustment
               as described below) calculated from and including the expiration
               date of the Offer period until but excluding the date the

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               shares of Common Stock received upon exercise of the applicable
               option are purchased by Crown. The interest rate described above
               shall be automatically increased by 1% or decreased by 1%, as
               appropriate, from time to time by 1% at any one time whenever the
               difference between the then current interest rate hereunder and
               the then current six-month LIBOR rate is 1%. The put right may be
               exercised only with respect to the number of shares of Common
               Stock which the holder would be entitled to receive upon exercise
               of the options as of the Commencement Date, and no adjustment
               shall be given effect following the Commencement Date with
               respect to any anti-dilution provisions of the plans under which
               the applicable options were granted. The foregoing put right will
               terminate with respect to a share of Common Stock received upon
               exercise of an Outstanding Option 90 days following the earlier
               of the date of exercise of such Outstanding Option after the
               Commencement Date and the fifth anniversary of the date of grant
               of the applicable option.

          Subject to compliance with the foregoing, nothing herein shall limit
          Crown's ability to restrict or terminate any Outstanding Options to
          the extent agreed between Crown and the holder of such Outstanding
          Options or any other Outstanding Options.

     Except as specifically amended hereby, the remaining provisions of the
Exchange Offer Agreement shall remain in full force and effect.

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     Please indicate your agreement with the foregoing by signing the enclosed
copy of this letter in the space indicated below and returning such copy to the
undersigned.

                                    Sincerely,

                                    CROWN CORK & SEAL COMPANY, INC.



                                    By: /s/ A.W. Rutherford
                                        -------------------------------


Accepted and Agreed:

COMPAGNIE GENERALE D'INDUSTRIE ET
 DE PARTICIPATIONS


By: /s/ Ernest-Antoine Selliere
    -------------------------------

Date: December 28, 1995

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