28 April 2006 - New York City, NY - Sotheby's co-chairman, impressionism and Modern Art, David Norman (hidden), describes Matisse's painting, Nu couche vu de dos, to the press during a preview at the Sotheby's auction house in New York City, USA, 28 April 2006. The piece, part of a major sale of impressionist and modern art, is expected to bring in between $12 and $15 million.