Postby Qrt.S » Fri Nov 28, 2014 1:00 pm
Mind my saying but I have a little different information regarding this Austrian export/responsibility mark on valuable metals. The period would be from 1925 to 2001 when this mark was discontinued. The initials are particularly the maker's i.e. a self-applied manufacture's punch. (Well of course the manufacturer could also be the exporter but not always...).
The previous export mark was the caduceus with winged Mercury cap (1922-1925) Punching it and later the mark in question on an object meant for export made the object exempt from domestic taxes and made it as well illegal for trade in Austria.
Please don't ask me who the maker is. i haven't the faintest idea. Austrian makers marks are not my cup of tea but hallmarks are.