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Traditional metal working in Mexico dates from the Mesoamerican period with metals such as gold, silver and copper. Other metals were mined and worked starting in the colonial period. The working of gold and silver, especially for jewelry, initially declined after the Spanish conquest of the Aztec Empire. However, during the colonial period ...
A silver object that is to be sold commercially is, in most countries, stamped with one or more silver hallmarks indicating the purity of the silver, the mark of the manufacturer or silversmith, and other (optional) markings to indicate the date of manufacture and additional information about the piece.
Jewelry by Boucher is almost always signed (meaning a marking signifying authenticity was put on the piece) and has an inventory number on it somewhere. [2] Some of the earliest marks say 'Marboux' or 'MB.' [2] Boucher used white metal in his pieces, but the entry of the US in World War II meant that metal was scarce. [3]
A hallmark is punched into a section of a silver chain by a silversmith. A hallmark is an official mark or series of marks struck on items made of metal, mostly to certify the content of noble metals—such as platinum, gold, silver and in some nations, palladium. In a more general sense, the term hallmark is used to refer to any standard of ...
Assay offices are institutions set up to assay (test the purity of) precious metals. This is often done to protect consumers from buying fake items. Upon successful completion of an assay (i.e. if the metallurgical content is found be equal or better than that claimed by the maker and it otherwise conforms to the prevailing law) the assay offices typically stamp a hallmark on the item to ...
Spratling also collaborated briefly (1949–51) with the Mexico City silver company Conquistador, and these pieces were marked with a circle in which was inscribed "Spratling de [or of] Mexico" and across, "Sterling". The eagle or assay mark for the Conquistador pieces contained the number 13, and for Spratling, the numbers 1 or 30.
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The Scandinavian silver alloy contains 83% pure silver and 17% copper or other metals. [10] German silver will be marked with a millesimal fineness of 800 or 835 (80% or 83.5% pure silver). Any items simply marked "German silver", "nickel silver" or "Alpaca" have no silver content at all, but are mere alloys of other base metals. [citation needed]