The "Wildman" and the Crown stamps are "in house" Logo and quality stamps by Sauer and are not proof stamps "per se". The actual proof stamps from the Suhl proof house( Sauer guns were proofed there) have been overstamped and mostly obliterated. The fact that it has proof stamps dates it to post 1893. Suhl didn't date the proofs until about 1922, so if there is no date stamp under the British stamps, that would make it 1893 to 1922( if there is a date stamp, it would take a closer exam than possible with the photos to find it) If Raimey's assessment that it is a war trophy, reproofed in England is correct( highly probable), any date gleaned from those marks would not be helpful in dating the manufacture, rather it would be the post 1945 reproof. In about 1911, the German proof procedures were "improved" and the proof loads were replaced by "duty" loads. If the load data can be found, as requested by Raimey, 1911 can be added to the considered dates i.e. 1893 to 1911 or 1911 to 1922. Given Raimey's reading of Jim Cate's data, I vote for 1893 to 1911. This could change if Jim has a specific date or if finding the load data conflicts with it.
Mike
