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The dates and compositions for US $1 coins are:
  • 1794-1935: an alloy of 90% silver and 10% copper
  • 1971-1981 and 1999: outer layers of 75% copper and 25% nickel bonded to a pure copper core
  • 2000-present: manganese brass bonded to a copper core
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11y ago
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Q: What is a US 1 dollar coin made of?
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