[drcy]

Not commenting on this specific case, but I think in general the refund comes from the person you bought it from. Especially after ten years, the seller has to be doing his own research on the items he sells. He is the seller.

I can also see how a person would be troubled about ten years later giving a refund to a person who was the person who bought it from them. In these days of theft et al, the person with the item at least has to prove he is the rightful/legal owner. If I sold something at a garage sale and a week a stranger else came to my door for a refund, my first response would be "Who are you? I've never seen you before in my life."

Lastly, look to the refund terms of the auction house. If at the original sale, the auction house said we will give full refund if an item turns out to be fake if it is returned within a year, those were the terms. Someone ten years later who didn't participate in the auction retroactively rewriting the sales terms (in their favor) sound pretty dubious.

Though I understand that you're not just talking about an auction, but a LOA. If there had been no LOA by the auction house, you may agree with everything I wrote above.

Though I will say one thing: you can't rhetorically rerwrite an LOA. If, for example, an LOA says "We believe this bat may have been used by Peter Rose" you can't ask for a refund under the guise that it says "We are 100% certain the bat was used by Pete Rose." A LOA is a document and you go by what it says. Though I have read many LOAs that, for example, say "We guarantee this item is 100% authentic and was hand signed by Joe DiMaggio."