Last Leonardo

In 2017, Leonardo da Vinci's small oil painting, the Salvator Mundi was sold at auction for $450m. In the words of its discoverer, the image of Christ as saviour of the world is 'the rarest thing on the planet by the greatest human being who ever lived'. Its dazzling price also makes it the world's most expensive painting.For two centuries art dealers had searched in vain for the Holy Grail of art history: a portrait of Christ as the Salvator Mundi by Leonardo da Vinci. Many similar paintings of greatly varying quality had been executed by Leonardo's assistants in the first half of the sixteenth century. But where was the original by the master himself?