Hellas 2007. This 2 Euro coin was issued on the occasion of the 50th anniversary of the Treaty of Rome. It shows the Treaty document signed by the six founding countries on a background evocating the paving (designed by Michelangelo) of the Piazza del Campidoglio in Rome, where the signing took place on 25 March 1957. The Treaty of Rome established the European Economic Community and ultimately led to the introduction of the euro in 1999 and euro banknotes and coins in 2002. The anniversary was celebrated on 25 March 2007. All the euro area countries have decided to mark the occasion by jointly issuing this commemorative coin.