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 merely limiting its highest value and not its lowest. The Bulgarian lev is pegged to the euro through a currency board. As part of ERM II, the currencies have a fluctuation band of ±15%. Denmark, however, has committed to a tighter fluctuation band of 2.25%. Convertible mark is the currency of Bosnia and Herzegovina and it was fixed to 1 German mark when it was introduced on the basis of the Dayton agreement; consequently after introduction of the euro, the Convertible mark uses the German-mark-to-euro rate at 1.95583 BAM per euro. Since 2005, stamps issued by the Sovereign Military Order