Switzerland has a very distinctive assay hallmark which is represented by a mountain dog in a triangular angled shape.
The mountain dog is of course a Saint Bernard, which is an iconic symbol of Swiss culture.
Hallmarking in the Swiss territories dates back to Geneva in the 15th century. Until then there was no uniform system of hallmarking in Switzerland. Before that time, hallmarking was undertaken locally by the Swiss cantons.
Stamping & Hallmarking in Switzerland is only optional for jewellery, compared to watches and watch cases which under current law must me stamped with the Saint-Bernard dog.