@Stig, well, there is a mound of discussion right now about this "Salvator Mundi",
I'm technican, a friend of us (artist/painter with a good reputation) would swear it's from Leonardos hand. But good Italian he is, he has too. On the other hand there have been copies in the past, which were created by scholars/students of L.
I think, all of his or Michelangelos pieces or walls are unique and simple epocal.
Most experts stick to that:
Salvator Mundi is a painting attributed in whole or in part to the Italian High Renaissance artist Leonardo da Vinci, dated to c.?1499–1510.[n
1] Long thought to be a copy of a lost original veiled with overpainting, it was rediscovered, restored, and included in Luke Syson's major Leonardo exhibition at the National Gallery, London, in 2011–12.
[2] Christie'sclaimed just after selling the work that most leading scholars consider it to be an original work by Leonardo, but this attribution has been disputed by other specialists, some of whom posit that he only contributed certain elements.
And the price, okay, if somebody has....