Any signs of prior Military Proof marks . These were used by branch proof houses , BSA and Webley had one , for military arms . Military proof was not acceptable or recognized by civilian authorities and guns proofed under military proof were considered as unproved arms outside of the military .
So what I thought was the inventory/equipment number was actually the military proof, all regent models for the RAF share the same number it's 9B/2592 there are no other markings aside from B'ham proof marks and BSA marks.
