chux, can't help you re the maker but the proof marks suggest that the gun was built between 1904 and 1925 and was proofed at a bore size under .615, and then re-proofed at .626 after 1955.Obviously some boring and honing has gone on, so if you are purchasing, you may want to check barrel wall thickness.


Better to keep your mouth shut and be thought stupid,than open it and confirm.