Press Preview Of Sotheby's Impressionist And Modern Art Auction

LONDON, ENGLAND - JUNE 14: Joan Miro's 'Peinture (Etoile Blueu)' is placed on a wall at Sotheby's on June 14, 2012 in London, England. This is among the most important works by the artist ever to come to auction and is expected to fetch an estimated £15-20 million. This piece is part of the Impressionist & Modern and Contemporary Art sale at Sotheby's which will be held on June 19, 2012 and June 20, 2012. (Photo by Bethany Clarke/Getty Images)