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 of Malta have been denominated in euros, although the Order's official currency remains the Maltese scudo. The Maltese scudo itself is pegged to the euro and is only recognised as legal tender within the Order. The euro is a major global reserve currency, sharing that status with the US dollar (USD), which continues to be the primary reserve of most commercial and central banks. Since its introduction, the euro has been the second most widely held international reserve currency after the US dollar. The euro inherited this status from the German mark, and since its introduction, it has increased its