“Salvator Mundi” was sold at auction in London in 1958 for a whopping £45.
It’s not in great shape. For centuries it was not known to be a da Vinci, and apparently some of the attempts to clean it were less than stellar. Still, someone thought it was worth the better part of half a *billion* dollars.
Some neato features: the face is in “soft focus,” while the hands are clearly in focus. The crystal orb shows a number of internal flaws. But I don’t know about the view *through* the orb; I would think that the hand and cloth behind it would be far more distorted. This might indicate that the artist – presumed to be Leonardo da Vinci, and boy howdy won’t the buyer be annoyed if it turns to to not actually be a da Vinci – didn’t actually have a true crystal ball at the time and was just guessing about how it would distort the image.