The 2008 €100 gold coin (polar explorers) - the largest (28mm diameter) and heaviest (half ounce) Irish gold coin to date.

O’Brien Coin Guide: Irish Commemorative Euro Coins

Most of the coins listed below were struck as ‘proofs’ – the exception being the first of the series, the €5 Special Olympics coin.  This was a cupro-nickel coin and is available as BU mini-presentation folder.  In addition to this, all other coins were struck in either Sterling silver or gold and are issued in…