European Currency Unit European Currency Unit The European Currency Unit (₠ or ECU, ) was a basket of the currencies of the European Community member states, used as the unit of account of the European Community before being replaced by the euro on 1 January 1999, at parity. The ECU itself replaced the European Unit of Account, also at parity, on 13 March 1979. The European Exchange Rate Mechanism attempted to minimize fluctuations between member state currencies and the ECU. The ECU was also used in some international financial transactions, where its advantage was that securities denominated in ECUs provided investors with the
Euro daily by some 343 million Europeans . Outside Europe, a number of overseas territories of EU members also use the euro as their currency. Additionally, 240 million people worldwide use currencies pegged to the euro. The euro is the second largest reserve currency as well as the second most traded currency in the world after the United States dollar. , with more than €1.2 trillion in circulation, the euro has one of the highest combined values of banknotes and coins in circulation in the world, having surpassed the U.S. dollar. The name "euro" was officially adopted on 16 December 1995