Phil: I think Tony and Jim Wall had their own special order round steel stamps to mark their holsters. Other workers may use steel letters like those to stamp wallets or other leather gear. I have a Boise holster that has the letter "MH" embossed on it. This must have been the maker's initials.

The 1980's Milt Sparks leather goods did not any initials on them. Mr. Sparks was a great man to deal with and Tony Kanaley carries on the tradition.