A Georgia O'Keeffe flower painting that the artist kept for herself is among the highlights of an upcoming auction of American art.
Sotheby's says "White Calla Lily" is estimated to bring $8 million to $12 million at the May 20 sale in New York.
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O'Keeffe created the work in 1927 and held on to it until her death in 1986.
The auctioneer says the back has a star motif, a device O'Keeffe used to mark her favorite pieces.
The current owner has owned the painting for more than two decades.
O'Keeffe's "Jimson Weed/White Flower No. 1" holds the record for the artist. It sold for $44.4 million at Sotheby's last year.
The sale also will include works by Childe Hassam, Martin Johnson Heade, Milton Avery and John Singer Sargent.