The Portuguese Assay Office, as the official testing and hallmarking authority in Portugal, is authorized to apply the hallmarks of the Convention on the Control and Marking of Articles of Precious Metals, to which Portugal is a signatory. The application of these hallmarks ensures that articles of precious metals are officially recognized in the other signatory countries of the Convention without the need for further testing.
The Convention’s hallmarking system consists of the application of the following marks:
Responsibility Mark + Assay Office Mark + Convention Mark
The Convention Mark may be TYPE 1 or TYPE 2
TYPE 1
TYPE 2
The Portuguese Hallmarking Office uses Type 2 Convention hallmarks by default, since the national hallmark already identifies the precious metal and its fineness. If the economic operator has a specific requirement, the Hallmarking Office may, alternatively, apply Type 1 Convention hallmarks, which also include the metal and fineness within the mark itself.
Convention Signatory States:
Austria, Latvia, Cyprus, Lithuania, Croatia, Norway, Denmark, Poland, Slovenia, Portugal, Finland, United Kingdom, Netherlands, Czech Republic, Hungary, Slovakia, Ireland, Sweden, Israel, Switzerland, Serbia.
Official Convention Website:
