All denominations of Ireland’s coins depict the national symbol of a Celtic harp. The harp has been an emblem of Ireland since the 13th century, first shown on a coin during the reign of King Henry VIII. The motif for the euro coins was designed by Jarlath Hayes.
Euro coins and banknotes were introduced on 1 January 2002 in twelve countries. Today, the euro area has grown to include 18 countries. Euro coins feature a common design on one side. Also, the national side (reverse) of every coin includes a ring of 12 stars from the European Union flag. Each country has its own design for the national side of its coins.