Dimes are
made out of an alloy (a mixture of metals) of 91.67 percent copper and 8.33 percent nickel (before 1965, the
dime was
made out of silver). The
dime has a edge with 118 ridges. This coin is 17.91 mm in diameter and is 1.35 mm thick - it is the smallest, thinnest and lightest US coin.
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