Tests for articles

In any test for the ascertainment of the fineness of any such article mentioned in this section and sections 556E.3 through 556E.5, according to the foregoing standards, the part of the article taken for the test shall be such portion as does not contain or have attached thereto any solder or alloy of inferior metal used for brazing or uniting the parts of such article, and provided further and in addition to the foregoing test and standards, that the actual fineness of the entire quantity of metal purporting to be silver contained in any article mentioned in sections 556E.3 through 556E.5, including all solder or alloy of inferior fineness used for brazing or uniting the parts of any such article, all such silver, alloy, or solder being assayed as one piece, shall not be less by more than ten one-thousandths parts than the fineness indicated according to the foregoing standards, by the mark stamped, branded, engraved, or imprinted upon such article, or upon any tag, card, or label attached thereto, or upon any container in which said article is enclosed.