The following is an article excerpt from CoinweekThe 1 euro coin is a bimetallic coin composed of a copper-nickel center with a nickel-brass outer ring. Along with the 2 euro coin, the 1 euro coin forms the backbone of eurozone coinage. The 1 euro and 2 euro coins are similarly bimetallic, except that the inner and outer core compositions are reversed on the 2 euro coin so as to make the coins easily distinguishable from one another. The 1 euro coin is slightly smaller in size and slightly lighter than the 50 euro cent coin. In relation to the size of U.S. coinage, the 1 euro coin is approximately 10% larger than the U.S. five cent coin.
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