by Sally Steele

“Onement VI” by Barnett Newman is on display during a preview of Sotheby’s Impressionist and Modern Art sales in New York on May 3, 2013. Sotheby’s is scheduled to hold its Impressionist & Modern Art sales May 7. AFP PHOTO/Emmanuel Dunand ++RESTRICTED TO EDITORIAL USE, MANDATORY MENTION OF THE ARTIST UPON PUBLICATION, TO ILLUSTRATE THE EVENT AS SPECIFIED IN THE CAPTION++ (Photo credit should read EMMANUEL DUNAND/AFP/Getty Images)