S&W has a lifetime repair policy, so you could call them and provide them the serial number with a description of the problem. Just just might fix it under warranty (not the finish though)!
I think that policy was initiated somewhere around 1990, on guns produced then & later. I doubt they would fix a pre-depression piece at no cost.
Still, making contact & discussing the gun wouldn't be a bad idea, IMO.
Good luck - have fun!