![]() In 2000, the United States Mint released the Golden Dollar coin, changing the alloy of the dollar coin to a clad composition manganese-brass, containing 88.5 percent copper, 6 percent zinc, 3.5 percent manganese, and 2 percent nickel. The face of these coins is 75 percent copper and 25 percent nickel and the core, which is visible along the edges of the coins, is composed of pure copper. The ten-cent coin, quarter-dollar coin, half-dollar coin and one-dollar coin are all "clad" coins, produced from three coin strips that are bonded together and rolled to the required thickness. The five-cent coin is composed of a homogeneous alloy containing 75 percent copper and 25 percent nickel. It was changed from the standard alloy of 95 percent copper and 5 percent zinc to copper-plated zinc. A major alteration was made in the content of the United States one-cent coin in 1982.
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