Newbie Luger Owner

[kmartindale]

I recently inherited a P08 Luger which once belonged to my Dad's uncle who served in WW1. The family story is that he brought it home from the war but nothing is really known about it. I could use some expert help identifying it.
It is a DWM 7.65 3 3/4 inch barrel (as measured from the muzzle to the forward flat part of the chamber) and has various identifying marks: the DWM stamp on top; The underside of the barrel has the number 6971, above the number is a 'crown over N', below the number is a slanted oval with two curved 'ears' sticking out from it; The front of the chamber under the barrel has 6971 with GERMANY and the slanted oval symbol below it; The left-front side of the chamber has the 'crown over N'; The safety has GESICHERT under the lever; There appears to be a very small 'crown over N' on the left side of the jointed arm; The number 71 appears on various other parts including the magazine. The butt end of the magazine also has a GERMANY stamp. No other marks are seen. Photos are attached.