Discussion in 'Error Coins' started by Bonnie B Viveiros, Jan 25, 2020.
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There is an inner core of copper. The outer layers are an alloy of copper and nickel. Your coin has toned. It's a sort of a rusting of the metal. For example, of it had been in the ground and was recovered (metal detecting) the color you are seeing is because of environmental damage. It's worth a dime, you can spend it.
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