The Louvre inspected the “Salvator Mundi” and certified it as the work of Leonardo da Vinci. But it kept those findings secret after a squabble with the painting’s owners.The Louvre inspected the “Salvator Mundi” and certified it as the work of Leonardo da Vinci. But it kept those findings secret after a squabble with the painting’s owners.Read MoreArt, Louvre Museum, "Salvator Mundi", da Vinci, Leonardo, Martinez, Jean-Luc, Mohammed bin Salman (1985- ), "Mona Lisa", France, Saudi Arabia, Museums