in ancient times metal coins were made of
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The bronze alloy used to make coins today is typically com- posed of 95% copper, 4% tin, and 1% zinc. A newer coin, the Sacagawea dollar, looks like a gold coin. It is actually made from an inner core of copper surrounded by an outer layer of manganese brass (an alloy of copper, zinc, manganese, and nickel).
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Ancient coins were made from gold, silver, electrum, and copper and its alloys, bronze or brass.
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