Exhibit 10(r)

                   THIRD AMENDMENT TO SOTHEBY'S HOLDINGS, INC.
                             1997 STOCK OPTION PLAN


         THIS THIRD AMENDMENT to the Sotheby's Holdings, Inc. 1997 Stock Option
Plan ("Third Amendment") is adopted by Sotheby's Holdings, Inc. (the
"Corporation") as of the dates indicated below:

                                    RECITALS:

         A. The Sotheby's Holdings, Inc. 1997 Stock Option Plan (the "Plan") was
adopted by the Board of Directors of the Corporation on April 30, 1996 and
approved by the shareholders of the Corporation at the Corporation's 1996 Annual
Meeting of Shareholders on June 19, 1996.

         B. Pursuant to Section 8.1 of the Plan, the Corporation has the
authority to amend the Plan. The Corporation desires to and does hereby amend
the Plan, as hereinafter set forth to increase the maximum aggregate number of
shares with respect to which Options may be granted to one Employee during 1998
and to increase the aggregate number of shares of Class B Common Stock that may
be issued upon the exercise of Options under the Plan.

         NOW, THEREFORE, the Plan is hereby amended as follows:

         1. Pursuant to action taken by the Compensation Committee on February
25, 1999, Section 4.1 of the Plan is amended in its entirety by substituting the
following:

                  4.1 SHARES SUBJECT TO THE PLAN.

                           The Option Stock to be made the subject of Options
                  granted under the Plan shall be shares of the Corporation's
                  authorized but unissued or reacquired Class B Common Stock.
                  Subject to adjustment as provided in Section 8.3 hereof, the
                  aggregate number of shares of Class B Common Stock that may be
                  issued by the Corporation under the exercise of Options under
                  the Plan is 10,900,000 shares of Class B Common Stock. The
                  aggregate number of shares of Option Stock outstanding at any
                  time shall not exceed the relevant number of shares of Class B
                  Common Stock remaining available for issuance under the Plan.
                  After termination of the Plan, the number of shares of Class B
                  Common Stock reserved for purposes of the Plan from time to
                  time shall be only such number of shares as are issuable under
                  then outstanding Options.


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         2. Pursuant to action taken by the Section 162(m) Subcommittee of the
Compensation Committee on December 15, 1998, Section 6.1 of the Plan is amended
in its entirety by substituting the following:

                  6.1 POWER TO GRANT OPTIONS.

                           The maximum aggregate number of shares of Common
                  Stock with respect to which Options may be granted to any one
                  Employee during a Fiscal Year shall be limited to 400,000
                  shares. For the 1998 Fiscal Year only, the maximum aggregate
                  number of shares of Common Stock with respect to which Options
                  may be granted to any one Employee during a Fiscal Year shall
                  be limited to 800,000 shares. For purposes of calculating the
                  number of shares with respect to which Options have been
                  granted to an Employee for any Fiscal Year, any shares subject
                  to an Option that is granted and subsequently cancelled or
                  surrendered during such Fiscal Year shall continue to be
                  counted against the maximum number of shares which may be
                  granted to such Employee pursuant to the Plan during such
                  Fiscal Year. Notwithstanding the foregoing, to the extent an
                  adjustment is made to the number of shares subject to an
                  Option to reflect a change in the corporate capitalization of
                  the Corporation, the additional shares, if any, subject to
                  such Option shall not be counted against the maximum number of
                  shares for which Options may be granted to the applicable
                  Optionee. Subject to this maximum share limitation, the
                  Committee may grant to such Employees as the Committee may
                  select, in accordance with Article 5 hereof, Options entitling
                  the Optionee to purchase shares of Common Stock from the
                  Corporation in such quantity, and on such terms and subject to
                  such conditions not inconsistent with the terms of the Plan,
                  as may be established by the Compensation Committee at the
                  time of grant or pursuant to applicable resolution of the
                  Compensation Committee.

         3. This Third Amendment shall be subject to the approval of
shareholders of the Corporation at the April 29, 1999 annual meeting and shall
be effective as of the dates specified above.

         IN WITNESS WHEREOF, this Amendment is hereby executed as of the day and
year first above written.

                                                   SOTHEBY'S HOLDINGS, INC.


                                           By:   /s/ Diana D. Brooks
                                               ---------------------------------

                                           Its:    President and CEO
                                               ---------------------------------

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