Marking Requirements - Pierre DeRoche PDR 4020 Mode D'emploi

Marking requirements

(according to the Swiss regulations)
All objects in precious metal sold in Switzerland must carry several
markings, registered with the Federal Customs Administration
(Central Office for Precious Metals Control).
Responsibility or maker's mark
This is generally the mark of the brand or of the component
manufacturer (e.g. for a watch case).
It may also be a joint maker's mark, meaning a trademark
registered by an association of manufacturers.
Swiss official hallmark and indication of standard of fineness
All watch cases, particularly those in gold or platinum, whether
made in Switzerland or imported, must bear the official "head
of a St. Bernard dog" hallmark, alongside the indication of the
fineness standard.
Prior to August 1 1995, other Swiss official confirmation hallmarks
st
were used.
Common Control Mark of the Vienna Convention
This international convention on the control and marking
of precious metal objects has been signed by 10 European
countries, including Switzerland. It provides for placing a common
control mark on objects in platinum and gold in particular, as well
as the other three above-mentioned indications. This common
guarantee hallmark depicts scales, at the centre of which the
standard of fineness of the metal in question is specified (750 for
gold, 950 for platinum).
16