Wow. Good for him. My family lost a handful of old long guns that were supposed to have been CW era. They had belonged to my great grandmother's side who all fought with Virginia units (Amherst, Nelson Counties). They were given away as "payments" for landscaping and handy-man work that was done. I believe my grandmother just about lost her mind when she found out. Needless to say, my Dad, brother and I were all really upset when we learned. This was quite awhile ago, but I always stress to others to ensure conversations and arrangements are had earlier than later concerning family heirlooms. No fault of my step great grandfather either. He lived to be 86 and we learned about the loss of CW guns months after they were gone. Just one of those unfortunate things and I'm sure the gentlemen who rec'd them as payment knew exactly what he was being paid 'gold' for the work he was doing.
For those with sizeable collections, make a ledger and ensure your firearms are labeled. Helping family members to identify them and know their history. Might be the difference of them continuing to be passed down and kept in the family vs. being sold or given away.