Silver has had an important role in the U.S.’s monetary system. In 1792, Congress based the U.S. currency on the silver dollar and fixed, or set, silver’s value to gold. Silver was used to make coins until 1965.
Silver is available in different levels of purity. Fine silver is 99.9 percent silver; sterling silver is 92.5 percent silver, with other metals, typically copper, making up the difference, and coin silver is 90 percent silver with 10 percent copper. Nickel silver, despite its name, is an alloy of 65 percent copper with nickel and zinc, and has no silver at all. Mexico, the United States, and Peru are the primary producers of silver.
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