This is a 1916 DWM I purchased many years ago from the son of a WWII veteran. He had no idea his father even had the gun until he passed away and he found it. There was no paperwork and no telling when he acquired it. It did have a WWII FXO magazine in it and is a Military proofed WWI Luger that matches completely down to firing pin with the exception of the magazine. Bore is excellent and still retains the better part of the Rust blue finish. The straw is probably 70%.