Strasnhe marks on a COLT 1911

[mrclark303]

Sorry Peter I misunderstood the sense, you're right there is something amazing to find such stamp on this kind of pistol, have you seen that before?

As Peter said, very common mark, I have seen 1911's with both Birmingham and London proof marks in the past, thousands of them must have been through the Proof Houses over the last 70 odd years