Help to figure this Luger out??

[Don M]

Originally Posted by Jasta2

From what I've read there are many,many, versions that came out of the postwar rework programs.

Bill, I think this observation is key. Apparently, many Lugers were assembled shortly after WWI from components that were in various stages of manufacture/acceptance at the end of the war. This can explain the commercial proof and lack of military acceptance stamps and Imperial proof.