It depends in which country it was minted.
The front side has a 1 and a map of Europe on it, the back is country-specific.
Despite the different design (per country) all Euros are legal tenders in all countries.
the official common currency of 12 European Union nations (Austria, Belgium, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, the Netherlands, Portugal, and Spain). In 1999 the euro was...
The euro (currency sign: €; currency code: EUR) is the official currency of fifteen member states of the European Union (EU). The states, known collectively as the Eurozone are: Austria, Belgium,...