The official currency of El Salvador is the Colon. But recently, the U.S. Dollar is accepted as currency throughout the whole country. Even U.S. coins.the U.S. Dollar
Andorra has no monetary unit of its own and the Euro has been the official currency from January 2002. Visitors from non Euro countries are advised to bring travellers cheques or Euro cheques and to cash them in Andorra as the exchange rate is usually better than in other European countries. Credit cards e.g. Amex, Visa