Horizontal lazy "N"...Long msg.

Walt, Needless to say, It is unusual to find a luger with both the military inspectors marks and Commerical crown N nitro proofs on the same pistol. If your horizontal crown over Ns on the right receiver and frame rail are smaller than the normal DWM c/Ns, I suspect that your pistol is a Weimar era Kreighoff rework (see Gibson's "Kreighoff Luger" book pages 113,140,143,and 190-199.) Usually the C/N will also appear on the top of the breeck block to the left of the extractor.