NEW YORK - OCTOBER 30: '200 One Dollar Bills' by Andy Warhol, valued at $8-12 million, is displayed during a preview of Sotheby's fall Evening Sale of Contemporary Art October 30, 2009 in New York City. The November 11 sale features works by Warhol, Hockney, Koons and others. Getty Images logo Getty Images 3 weeks ago

NEW YORK - OCTOBER 30: '200 One Dollar Bills' by Andy Warhol, valued at $8-12 million, is displayed during a preview of Sotheby's fall Evening Sale of Contemporary Art October 30, 2009 in New York City. The November 11 sale features works by Warhol, Hockney, Koons and others.