Always small mysteries - to me - did they make the first 10,000 Simson lugers in the first two years and parts, then slowly made them for police / army over time? (that is my gut feeling now) but to prove it, would require documentation I don't have.
----
I took apart a possible Simson #7 that was mostly unmarked but was supposedly taken from the wall of a office and I would love to own it
Family probably wants to keep it...
Lots of little mysteries....