Proof Marks Guide/ Help Identify

[Foxhound1331]

Hello everyone, this is my first post!

I need some help identifying/deducing some provenance through proof-marks on what I believe is a Pre-War commercial Mauser C96.
I have attached photos below.

1.) "Germany" (import marked? if so by whom and or where?)
2.) Proof mark under barrel
3.) #8 in the underside interior of the upper

Any help is greatly appreciated!

Cheers!