Bottom of the grip has a symbol of some sort etched in it. I was told that it could be a ranch brand symbol, but who knows. Wish these old guns could talk!
Ty, you need to go to the Cody, WY gun show some time. In the late 1980's it was extremely odd to find one Sturm, Ruger & Co. product at the show. Colts, more Colts and then even more Colts! Awesome stuff!