According to the European Central Bank, each euro area country can issue two €2 commemorative coins per year. Most commemorate the anniversary of historical events or mark current events of historical significance.

The most valuable of the €2 coins is worth over €4,500, and marks the 25th anniversary of the death of Princess Grace Kelly of Monaco, issued in 2007.

But there are more two-euro coins valued at up to 50 times their value.

Another example is the €2 coin commemorating the 800th anniversary of the first castle on the rocks of Monaco, issued in 2015, with 10,000 minted, which is now be worth more than €4,000.

A €2 coin commemorating World Youth Day, Cologne 2005, is worth more than €200.

Less valuable, but still very desirable for collectors, is the coin commemorating the 60th anniversary of Finland's 2008 Universal Declaration of Human Rights, which is worth around €14.