odd ball Luger ID help needed

[hipwr223]

Hi all,

Hope some of you can shed some light on a Luger I picked up several years ago. Allow me to give some background on the group that this came from. I bought an estate of guns from a guy that previously lived in NJ. His children sold me the grouping. He was an FFL in the 1960's and kept good records. Along with this pistol there were several other RARE guns from big names. I had a 41 Mauser Banner commercial in 99% he got it from Bruffet. There were a couple other Lugers that came from Shattuck, there was a Walther HP LW in 98% that was ultra scarce. A couple rare panagraphed pps and ppks. So the guy had first rate, high end German pistols. Then there was this Luger.....

The gun is in the white, and has three unmarked bbls. No proofs, no serials, no front sights. The frame, takedown lever, Navy bolt and toggle, spare toggle, and trigger are all numbered 1. The only blued item is the Navy toggle group. It has a lazy crown N and no other marks on the frame. The top frame looks like it may have had a date or something removed. The Navy Toggle group is DWM marked. The gun puzzles me as I feel it is someones attempt to make a strange gun. However, it came out of a collection of real high end stuff. Any thoughts???? Tool room gun, or forgery???