25 Years of EU Enlargement

25th Anniversary of the 2004 EU Enlargement

Sixth joint issue of the European Union. All 21 euro-area states are issuing a coin with the same design on varying dates. The coins differ only in the inscription, which appears in each country's national language.

In May 2004, the European Union carried out the largest enlargement round in its history: ten states joined simultaneously — including Poland, the Czech Republic, Hungary, Slovakia, Slovenia, the three Baltic states of Estonia, Latvia and Lithuania, as well as Malta and Cyprus. Ireland was among the founding members of the Community that actively helped shape this process. As a small country that had itself joined the then EEC in 1973 and experienced considerable economic advancement through EU funding, Dublin viewed the enlargement not merely as a geopolitical act but as a logical continuation of the European project. By this point, the Irish economy had already passed the peak of its "Celtic Tiger" boom years but remained deeply integrated into the European internal market.

The 2004 EU enlargement structurally transformed the Union: the population grew by around 75 million people, nominal GDP rose, and institutional weightings shifted. For the acceding countries, 1 May 2004 marked the end of decades of isolation behind the Iron Curtain and the conclusion of extensive reform processes in law, administration and the economy. Since then, free movement within the EU has changed fundamentally — Irish labour markets were among the very few to open immediately in 2004 to workers from the new member states, triggering one of the strongest waves of immigration in Irish history. On the 25th anniversary of this enlargement, Ireland marks with its 2029 2-euro commemorative coin a date that has permanently shaped the form of modern Europe.