Perfect, that's two indicators for German occupation production. And of course you are correct there are documented variations that have no serial number. Thanks for posting those photos.
I own the US Army in both 45 and 9. No issues. Very well made and I like the greenish park finish. I've only used the included mags. The plastic grips are a tad lighter in color than the US built GI. I changed the grips to double diamond in walnut. I think you would be pleased at the...