'Self-Portrait' by Andy Warhol is on display during a preview of Sotheby's impressionist and modern art sale in New York, October 30, 2009. Sotheby's is scheduled to hold its impressionist and modern art sale on November 4, 2009. Getty Images logo Getty Images 28 months ago

'Self-Portrait' by Andy Warhol is on display during a preview of Sotheby's impressionist and modern art sale in New York, October 30, 2009. Sotheby's is scheduled to hold its impressionist and modern art sale on November 4, 2009.