A Marble Head of Zeus, Roman Imperial, late 1st/2nd Century A.D., on an 18th Century bust

turned slightly to his right, his face with luxuriant beard and moustache, full parted lips, and prominent brow, his long wavy hair spiraling from the crown, bound in a diadem, raised in twin locks over the forehead, and falling in long deeply drilled curls down over the nape of the neck.

European private collection, 18th Century (based on the restorations)
Rome art market, 1934 or earlier
Nice, France art market

http://arachne.uni-koeln.de/item/marbilderbestand/1059146 (Deutsches Archäologisches Institut, neg. no. 1934.1677, logged in on October 24th, 1934)

As shown and described, surface cleaned, nose restored in marble, two sections along edge of back of 18th century bust repaired, locks of hair above the forehead chipped.
In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective qualified opinion.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING CONDITION OF A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF SALE PRINTED IN THE CATALOGUE.

An old label on the front of the base reads "136." The old photograph shows the bust mounted on a circular white marble socle typical of the 18th century.