I sure could find some experts for hire to drive up the price of my cultural artifact.

Without anyone wanting to buy this and spend resources on that, finding claims to proof the contrary might be a quite futile task.

The whole board of the Museum is non-experts. Nobody has any interest in devaluing that expense.

In that era even attributing works definively to a single artist and not a school or workshop just feels a bit off.

https://kimbellart.org/content/nuestro-kimbell

absurdly well citing reddit comment on the provenance:

https://www.reddit.com/r/museum/comments/x6k3mm/comment/in89...