If you still live near there now (or even if you don't), you might want to put in the local paper where the gun was sold by your uncle. It might bring some answer. I once traced my Model 21 20 gauge back to the original owner and it ended up being purchased in the early thirties (originally)over in Indiana. But, only two people other people had owned it other than me, so it wasn't so hard. But, good luck.