This May 14th, Barnett Newman’s Onement VI will go on sale at Sotheby’s Contemporary Art Evening Auction, projected to sell for $30 to $40 million.  While Sotheby’s has declined to name the seller, several dealers have identified the current owner as Microsoft co-founder Paul Allen, who purchased the painting in 2000.  “Several conservators have seen it and said it is in good condition,” says Tobias Meyer, Sotheby’s Contemporary Art Worldwide head. “It is unlined and on its original stretcher.”  (more…)