Highlights From Sotheby's Forthcoming London And New York Sales On Display [Getty Images]

LONDON, ENGLAND - OCTOBER 08: Sotheby's employees hold Jackson Pollock's 'Number 4, 1951' on October 8, 2012 in London, England. Estimated at $25-35 million the work forms part of Sotheby's Impressionist, Modern and Contemporary Art sale on November 5, 2012 in New York. (Photo by Peter Macdiarmid/Getty Images)

Getty Images News Peter Macdiarmid