My latest purchase is this German EB02 grabendolch/trench knife manufactured by Franz Koeller this combination knife/bayonet was attachable on the rifle/gewehr 98 , the blade is stamped F.Koeller & Co. and on the other side of the blade and crossguard there are two Abnahmestempels/Acceptance stamps enjoy the pictures.
F.Koeller v Demag.
F.Koeller v Demag.