High Quality Content by WIKIPEDIA articles! 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. Slovenia introduced the euro (€) on 1 January 2007. Since then, the Bank of Slovenia have been issuing both normal issues of Slovenian euro coins, which are intended for circulation, and commemorative euro coins in gold and silver.