Please help identify german maker's mark „ABC“

[Gerox]

Hello All,
There is a nice snuff box, Half moon crown 835 silver

I can't find the maker's mark „ABC“.
Has anybody an idea?
Any help would be greatly appreciated. Thank you!

Gerox

[Bahner]

Hello, this is A. Betz and Co from Schwaebisch-Gmuend, active roughly from the 1930ies to the 1960ies. Regards, Bahner

[Gerox]

Hello, this is A. Betz and Co from Schwaebisch-Gmuend, active roughly from the 1930ies to the 1960ies. Regards, Bahner

Hi Bahner,
thank you for your quick reply. It is very appreciated.
Best regards
Gerox