Randall, thanks for providing the link. I am working on a page for the British proof marks, just need to finish it.

I am 90% sure of the dating of the proof marks on this gun. It is one of those strange Belgian guns done just before the occupation during WWII. Some have very bizarre proof marks. So either the gun was resubmitted in 1960 or they were so hectic in stamping in 1938....

Pete