This is a example of the rarely encountered World War I Imperial German Aufpflanzbarer Grabendolch (Fixable Trench Knife - Bayonet), often referred to by collectors as the DEMAG. These knife bayonet was produced by Deutsche Maschinefabrik A-G of Duisburg (DEMAG) makers mark on the ricasso. The total length is 27.4 cm.

Grip: The grip is a "crank” shaped steel handle. The balance of the grips shows a medium steel gray patina, with some darker brown oxidized patina as well. The bayonet locking mechanism is fully functional and mechanically excellent and the locking button and stud work as they should.

Blade: This dagger features a 150 mm nickel-plated steel blade, with unsharpened edges. The blade's ricasso is marked with the manufactured by DEMAG D.R.G.M. (Deutsche Maschienenfabrik AG).

Scabbard: The steel scabbard is in very good condition. The obverse of the scabbard retains about 85% of it is original black finish, mixed with a smooth plum-brown patina. The reverse of the scabbard retains about 95%+ of the original finish, with the balance the same plum-brown patina as found on the front of the scabbard. The original leather belt loop and retention strap is in place on the scabbard. The leather remains strong and usable.