I have been mapping the sale of Attic pottery at Sotheby's New York since 1998. Some $7.6 million worth of pots have been sold, with a median value of $11,213. Some 63% of the lots surfaced for the first time after 1973 (the data of the AIA declaration; see "The 1970 Rule").
Attic pottery is a minor component of the auctions. Compare the $51.4 million worth (21% of value) of Egyptian antiquities over the same period. 66.5% of the Egyptian lots surfaced for the first time after 1973.
© David Gill, 2010