Justice rules in favor of Sotheby's in the dispute with a Russian oligarch over the sale of Da Vinci's 'Salvator Mundi' Billionaire Dmitry Rybolovlev accused the auction house of defrauding him of tens of millions of dollars in four works with overprices agreed with a Swiss dealer. The piece that has been the protagonist of the litigation, one of the most talked about in the sector market, is the Salvators Mundi by Leonardo da Vinci.