How about an October 1928 proofed double by ASS(August Schüler Suhl) utilizing Heinrich Barella's 1922 patent - Sicherungsvorrichtung fuer hahnlose Gewehre or safety device for hammerless sporting weapons?











http://www.gunbroker.com/Auction/ViewItem.aspx?Item=284097748




Kind Regards,

Raimey
rse