Must have been made for the American market as only the Protection is a U.S. of A. patent for a very expensive method of joining tubes & the Spezial 3 Ringe Gewehr Lauf Stahl is stamped Special Gun Barrel Steel, a stamp in English that I don't recall seeing prior. I would hazard a guess of mid to late 1890s as the market didn't seem to fancy the typical Clock Hand indicator Gesetz Geschutz DRGM Nr. 17913(Gebrauchsmuster 17913/DRGM Nr. 17913 - filed 9.25.1893 and issued 8.12.1896 under the term Selbstspannergewehrschloß u.s.w.(and so forth, etc.)) so a dial was engaged. Either the chamber length was stamped on the extractor or was 65mm.
Cheers,
Raimey
rse
