Never seen rings on the hammer . . . .
Can you show us a closeup of these rings?
I have a "collection" of two 1917 revolvers consisting of one S&W and one Colt. Both are all original. By their looks, they don't appear to have ever seen any action except by me. I enjoy shooting them. The Smith is a much more refined gun in both fit and finish. The Colt has a tractor pull double action.