I have my doubts, too!! The authentication does not seem bullet-proof by any means, and the provenance is murky. I’m no expert but one reason I did not think the price would get so high is that it seems difficult to feel 100% certain that this painting is by Leonardo himself and not (as was believed for a long time) by someone from his workshop.
When you compare it to the Mona Lisa, there is some vague similarity and yet this one (Salvator Mundi) does not seem to me as finely crafted. It seems like it could easily be someone “of the school of Da Vinci” but not the master himself....
But what do I know, I am just an amateur observer. They have some number of experts who have authenticated it, although there do seem to be some lingering doubts.....
Indeed. I agree with you.