Highlights from the Spring auction sales in New York continue to trickle out, as Sotheby’s announces a marquee Roy Lichtenstein canvas, Nude Sunbathing, set to sell for upwards of $20 million at the auction house’s Post-War and Contemporary sale.  “Painted in 1995 and exemplary of Lichtenstein’s late, great genius, the work revisits one of his signature subject matters: the female form,” the company said in a statement.Read more at Sotheby’s