The November evening sales in New York will be defined as much by who is selling as by what is on offer. ARTnews has traced the consignors behind a large share of the lots, a roll call of famous collectors, fallen financiers and old-money families, in a market where a famous name on a lot has become a key selling point.

The headline lot is Wassily Kandinsky's Betonte Ecken of 1922-23, the cover lot of Christie's 20th Century Evening Sale with an estimate of $60 million to $80 million, consigned by the Nahmad art-dealing dynasty. At Christie's, 40 of the 79 lots in that sale carry a named consignor, as do 35 of 58 in the 21st Century Evening Sale. Seven more lots, grouped as Heroes and Lovers, are widely understood to be Koons consignments.

At Sotheby's, only 13 of the 50 lots in the Modern Evening Auction have named sellers, but 11 more come from one private American collection, presented as Shaping Modernity. The group belongs to George Weiss, a bankrupt hedge fund founder, according to a person familiar with the consignment. Weiss sought court permission this year to sell a 1972 Francis Bacon self-portrait and has since agreed to sell more than a dozen works to repay a bank loan. The Bacon, estimated at $10 million to $15 million, will appear in the Now and Contemporary Evening Auction with a Signac at $12 million to $18 million and works by Pissarro, Matisse and Cezanne.

Other sellers include the Seagram heir Edgar Bronfman Jr. and his wife Clarissa, offering a Wifredo Lam at $10 million to $15 million and a Roberto Matta at $5 million to $7 million, and former Hyatt president Ed Rabin and his wife Jackie, consigning an untitled 1968 Rothko at $10 million to $15 million. Sotheby's has also billed Magnum Opus, a 900-object collection assembled by investor Frederick Iseman, with four works in the Modern Evening Auction and one in the Now and Contemporary sale, led by an 1882 Degas drawing, though Iseman's name is absent from its marketing.