Design
The coins are composed of an alloy called nordic gold, with a diameter of 22.25 mm, a 2.14 mm thickness and a mass of 5.74 grams. The coins' edges are smooth with seven indentations from the coin's "Spanish flower" shape. The coins have been used from 2002, though some are dated 1999 which is the year the euro was created as a currency, but not put into general circulation.
Read more about this topic: 20 Cent Euro Coins
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