But what puzzles me is that all but one of the examples I have viewed passed thru the Z-M Proof Facility vs the one that passed thru the Suhl Proof Facility. Some were in the final state as the one below & the initials >>GS<< are very, very common on many including tip-up versions.

[Linked Image from thumbs2.imgbox.com]

This August Schueler was retailed by a Berlin Retailer Waffen Scherell and has Cats engraved on it so some say it was a High Hill Cat Gun?

Hochachtungsvoll,

Raimey
rse