1913 dwm

[Leed709]

I been doing a lots of reading on the Luger pistol and I think I found out why this Luger is in 30 luger instead of 9mm. This luger was 9mm. After the treaty of 1917 the Germans were allowed only 8mm or below. So what they did was to rebarrel them to 30 luger to stay in the rules of the treaty. What I don't understand is the small cross on the left side of barrel.