Euro gold and silver commemorative coins (Belgium)
Euro gold and silver commemorative coins are special euro coins minted and issued by member states of the Eurozone, mainly in gold and silver, although other precious metals are also used in rare occasions. Belgium was one of the first twelve countries in the Eurozone that introduced the euro (€) on 1 January 2002.
Source: Wikipedia — Euro gold and silver commemorative coins (Belgium) (CC BY-SA 4.0)