Okshteyn’s Mona Lisa smiles on Gray’s Auctioneers’ art sale May 27CLEVELAND – Gray’s Auctioneers & Appraisers will offer a rare Shimon Okshteyn oil painting and serigraph Mona Lisa at their 19th Century, Modern and Contemporary Fine Art Auction on Thursday, May 27. LiveAuctioneers will provide Internet live bidding for the sale, which begins at 1 p.m. Eastern. Estimated conservatively at $8,000-$10,000, the painting is composed […]