Strange markings on back of holster

[steelcase]

Just picked up a p08 holster. It has a name and V-4000 markings scratched on the back. i thought this was a post war defacement until i found similar marking posted in the Walther forum on a pp holster. Interesting. Anyone have any speculations.

http://www.waltherforums.com/forum/p...wii-era-2.html