It is almost exactly 10 years since Salvator Mundi was unveiled, this “lost Leonardo” instantly triggering astonishment around the world. Since those giddy days, the work has had a turbulent time. As well as becoming the most expensive painting in history, going for $450m (£326m) at auction, Salvator Mundi was denounced by many as a fake and subsequently vanished from view. The painting is now the subject of The Lost Leonardo, a documentary by Andreas Koefoed that opens in cinemas this week.
“I would be surprised,” says Luke Syson, “if I went to see this documentary.” Syson is the