POWER OF ATTORNEY

The undersigned constitutes and appoints
each of JONATHAN A. OLSOFF, DAVID SCHWARTZ,
SUSAN LOWRY and ROYCE
MAKIL acting or signing individually, as the
undersigned's true and lawful attorney-in-
fact to:

(1) Execute for and on behalf of the
undersigned, in the undersigned's capacity
as an officer or director of SOTHEBY'S, a
Delaware corporation (the "Company"), Forms
3, 4 and 5, and any amendments to any such
form, pursuant to Section 16(a) of the
Securities Exchange Act of 1934 (together
with the rules promulgated thereunder,
"Section 16 of the Act");

(2) Do and perform any acts for and on the
undersigned's behalf that may be necessary
or desirable to complete and execute any
Form 3, 4 or 5 or amendment to any such form
and timely file such form or amendment with
the United States Securities and Exchange
Commission, any stock exchange or other
similar authorities; and

(3) Take any other action of any type
whatsoever in connection with the foregoing
that, in the opinion of such attorney-in-
fact, may be of benefit to, in the best
interest of, or legally required of, the
undersigned.


The undersigned further empowers each
attorney-in-fact under this Power of
Attorney to determine in such individual's
discretion the form and contents of the
above described documents.

The undersigned grants to each such
attorney-in-fact full power and authority to
do and perform any act or thing requisite,
necessary or proper to be done in the
exercise of any of the rights and powers
granted in this Power of Attorney, as fully
as if the undersigned might or could, if
personally present, perform such act or
thing, with full power of substitution or
revocation. The undersigned further ratifies
and confirms all that such attorney-in-fact,
or his substitute or substitutes, may
lawfully do or cause to be done by virtue of
this Power of Attorney and the rights and
powers granted herein.

The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in
such capacity at the request of the
undersigned, are not assuming, nor is the
Company assuming, any of the undersigned's
responsibilities to comply with Section 16
of the Act.
This Power of Attorney will remain in full
force and effect until the undersigned is no
longer required to file Forms 3, 4 and 5
with respect to the undersigned's holdings
and transactions in securities issued by the
Company, unless earlier revoked by the
undersigned in a signed writing delivered to
the foregoing attorneys-in-fact.

The delivery of this electronically signed
Power of Attorney will have the same force
and effect as the delivery of an original,
manually signed Power of Attorney.

IN WITNESS WHEREOF, the undersigned has
caused this Power of Attorney to be executed
this 6 day of March,2017.

/s/Marsha E. Simms

MARSHA E. SIMMS
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