LONDON, ENGLAND - OCTOBER 12:  Two women chat in front of a painting by Andy Warhol entitled '200 One Dollar Bills' made in 1962 on October 12, 2009 in London, England. The piece features in Sotheby's Contemporary Art Sale in New York on November 11, 2009 and is expected to fetch up to 7.6 million GBP. Getty Images logo Getty Images 4 months ago

LONDON, ENGLAND - OCTOBER 12: Two women chat in front of a painting by Andy Warhol entitled '200 One Dollar Bills' made in 1962 on October 12, 2009 in London, England. The piece features in Sotheby's Contemporary Art Sale in New York on November 11, 2009 and is expected to fetch up to 7.6 million GBP.