1. Articles controlled and marked by an authorised assay office in accordance with the provisions of this Convention shall not be submitted to further compulsory assaying or marking in an importing Contracting State. This does not prevent an importing Contracting State from carrying out check tests in accordance with Article 6.
2. Nothing in this Convention shall require a Contracting State to allow the importation or sale of articles of precious metals which are not defined in its national legislation or do not comply with its national standards of fineness.