I really appreciate all the sharing of knowledge, quite a bit of it here concerning the Luger's lineage. As a result, i've invested several hours researching and gaining insight on Luger history. Special thanks to CZU, Gypsmjim, and Absalom who put me onto the right track. Here are some more details on my specific pistol, with more to come as I continue researching. I can see where this could easily become another obsession.
1) Originally a DWM 1918 military contract Luger (dated chamber).
2) All visible numbers are matching.
3) It has been reworked, barrel is not serialed, but is proofmarked and numbered "3" to indicate this is the 3rd barrel. Match mark is lined-up. Has Simson 33 waffenamts and Polizeischule Technik markings, and sear safety has been installed.
4) Grip frame and grip panels are unmarked, no unit markings.
5) Magazine is the later aluminum variety but is serialed to the gun and has the police contract eagle "-L" and "1" police markings.
6) Holster has the mag tool and both are serialed to the gun. holster appears to be an Akah, but has had the strap replaced at some point with a snap type button closure and appears to be professionally installed. Stitching for the original strap attachment is still present.
7) It has been refinished, whether during the rework process or later is unknown.
8) Purchase price was $1500, which I considered reasonable given the condition and holster. Unless it were a nice deal on a Navy or Artillery version, it's likely that this will be the only example in my collection.