The euro has been around for 21 years - here are the 12 currencies it replaced

One euro was worth around 2.2 Guilders. The notes were considered some of the world's most beautiful.

One euro was more than 1,900 Lire.

One euro was worth around 166 Pesetas.

Around 6.6 Francs was worth one euro.

Punt means pound in the Irish language, but the currency was entirely distinct from the UK pound.

The coin design was striking and simple, highlighting the country's wildlife.

One euro was worth around 0.78 Punts.

The Schilling was in place before and after WWII, though it was replaced during the war by the Reischmark as Germany annexed the country.

One euro was worth around 13.8 Schillings.

Greece actually didn't introduce the euro in 1999 like the other countries, but introduced it in time for the 2002 adoption.

The Drachma has roots in ancient Greek, and 340.75 of them were worth one euro.

The currency was distinct from the French Franc.

Just over 40 Luxembourg Francs were worth one euro.

One euro was worth around 200.5 Escudos.

The Markka replaced the Russian Ruble after Finland gained independence from the USSR.

5.9 Markkas were worth one euro.

The Belgian Franc was also independent from the French Franc.

Around 40 Francs were worth one euro.