The centrepiece of the €1 and €2 euro coins is the royal seal of 1144 surrounded by symbolic representations of castles and coats of arms.
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.