My latest find is this German grabendolch/trench knife manufactured by Demag this combination knife/bayonet was attachable on the rifle/gewehr 98 the double edge blade is stamped Demag Duisburg Deutsche Maschinefabrik A-G of Duisburg , D.R.G.M. Deutsches Reichsgebrauchsmuster on the spine is a Abnahmestempel/Acceptance stamp enjoy the pics.