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The coin silver standard in the United States was 90% silver and 10% copper, as dictated by US FTC guidelines. However, in silversmithing, coins could come from other nations besides the United States, and thus coin silver objects could vary from 750 millesimal fineness (75% silver) to 900 (90% silver).
892.4: US coinage 1485 ⁄ 1664 fine "standard silver" as defined by the Coinage Act of 1792: e.g. Draped Bust and Capped Bust U.S. silver coins (1795–1836) 875: 84 zolotnik is the most common fineness for Russian silver. Swiss standard, commonly used for export watchcases (also 800 and later 935). 868: 83 1 ⁄ 3 zolotnik.
Sterling silver is an alloy composed by weight of 92.5% silver and 7.5% other metals, ... The sterling silver standard has a minimum millesimal fineness of 925.
The French have two standards for silver purity or fineness. The higher is 950 parts per thousand, or 95% silver referred to as 1st Standard. The lower grade of silver is 800 parts per thousand, or 80% silver referred to as 2nd Standard. Both standards are marked with the head of Minerva inclusive of a numeral 1 or 2 to indicate the standard.
As a unit, the zolotnik was the standard for silver manufacture, ... 91 zolotnik Russian silver has a millesimal fineness of 947.9. 88 zolotnik has a fineness of 916. ...
The Spanish silver dollar created a global silver standard from the 16th to 19th centuries. The silver standard [a] is a monetary system in which the standard economic unit of account is a fixed weight of silver. Silver was far more widespread than gold as the monetary standard worldwide, from the Sumerians c. 3000 BC until 1873.
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Sterling silver is an alloy of silver containing 92.5 by weight of silver and 7.5 by weight of other metals, usually copper. The sterling silver standard has a minimum millesimal fineness of 925. 92.5 what by weight of silver? I'm assuming that it's 92.5% ? Seattle Rex 03:28, 18 February 2017 (UTC)