Our museum has an item on long-term loan that is potentially pretty valuable--a 200-yr old document.
We no longer wish to have this item in our custody unless it is gifted to us outright, and no longer on loan.
The gentleman who loaned it to us lives out of state and is considering donating the item to us, but is currently consulting with his attorneys to decide if he should gift the item to us (a non-profit museum) for tax deduction benefits or ask us to return it to sell the item elsewhere.
He is basing this decision on appraisals done by a company that has not seen the object in question in person for nearly 20 years (the length of time it has been on loan to us), and only has photographs to go by. These appraisals were paid for by the potential donor.
Our museum does not do appraisals, nor can we afford one of our own, so we have no way of knowing if the item is worth what he says it is. Is there any potential legal ramification to us if we decide to accept the item into our collection as a donation with the value he has listed (around $20,000)- i.e. in a situation like a tax audit?