European Currency Unit opportunity for foreign diversification without reliance on the currency of a single country. The ECU was conceived on 13 March 1979 as an internal accounting unit. It had the ISO 4217 currency code XEU. On 1 January 1999, the euro (with the code EUR and symbol €) replaced the ECU, at the value €1 = 1 ECU. Unlike the ECU, the euro is a real currency, although not all member states participate (for details on euro membership see Eurozone). Two of the countries in the ECU basket of currencies, UK and Denmark, did not join the eurozone, and a third,
International status and usage of the euro concerns with banking secrecy, the EU and Andorra signed a monetary agreement on 30 June 2011 which made the euro the official currency in Andorra and allowed them to mint their own euro coins as early as 1 July 2013, provided they comply with the agreement's terms. However, the first Andorran euro coins did not enter into circulation until January 2015. Outside the EU, there are currently three French territories and a British territory that have agreements to use the euro as their currency. All other dependent territories of eurozone member states that have opted not to be a part