NEW YORK, N.Y.- Sotheby’s announces that four masterworks by the celebrated American Abstract Expressionist Clyfford Still (1904-1980) will headline Sotheby’s Contemporary Art Evening Auction on Wednesday, November 9, 2011. The four paintings come from the Estate of Patricia Still and are being sold by the City and County of Denver. They are expected to realize a combined total in excess of $50 million, and are being sold to further support the endowment of the new Clyfford Still Museum, which is scheduled to open to the public in Denver on November 18, 2011. The paintings will be shown in Hong Kong and London at the beginning of October prior to the New York pre-sale exhibition. “The appearance of these paintings on the open market represents a once-in-a-lifetime opportunity for collectors of iconic and Abstract Expressionist art,” said Tobias Meyer, Worldwide Director of Contemporary Art at Sothe