1918 DWM Proof Marks.?

[hansfischer007]

I took another photo of the right side....and can't see where it would be misshapen.?.....running my finger over it....I can feel the sharp edge....so its a mystery.......would anyone hazard a guess as to why proof marks would have been removed off a 1918 DWM.?...and all the other marks are still there.........its a good looking pistol....actually better than the photos show.........and Im quite happy with it....just have a "mystery" to figure out..........whoever owned this really put it to use........not just casual shooting......this looks like a pistol that went thru all the WW1 years.........I value everyones opinion and appreciate you taking the time to answer as always....Hans Fischer