Wow, a very nice find.
There's one just like it (S# 600184) in Menchini's book, p. 356.
Does yours have the FNA trademark on the barrel lug?
Also, you should offer a seminar on your "short money" techniques.
Seems that you are getting very good at this.
A community dedicated to Lugers, Central Powers, Axis, Allied and related WW-I and WW-II pistols by their scholars, collectors, owners and enthusiasts. Come join the discussion about the history, technology and extraordinary background associated with these design masterpieces.