I've acquired a Pocket Hammer that has British proofs on the slide- one just below the circled logo on the left rear of the slide, the other on the right side just to the rear of the ejection port. I understand that the proofs usually, but not always, also appeared on the barrel and frame. These are not present. Is there any way to determine via shipping records/serial #s (22744) if this pistol indeed went to London, or if the frame and slide were just switched out at some point? It is an un-numbered slide correct for this range, and the condition/patina of the frame and slide are a match. Any information would be appreciated!