An auction house worker poses for photographers in front of an untitled oil on canvas 1957 painting by Mark Rothko in central London, Monday, Oct. 14, 2013. The artwork will be offered in auction at

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An auction house worker poses for photographers in front of an untitled oil on canvas 1957 painting by Mark Rothko in central London, Monday, Oct. 14, 2013. The artwork will be offered in auction at Christie's New York 'Evening Sale of Post-War and Contemporary Art' on Nov. 12, 2013. It is estimated to fetch some US$ 25-35 million (euro 18,4- 25,8 million). (AP Photo/Lefteris Pitarakis) less 

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Associated Press
Tue, Oct 15, 2013 5:09 PM EDT