Andorra and the euro facto" used the EU's euro (the currency of the Eurozone states) as it had historically used the French franc and Spanish peseta. When those two currencies were replaced by the euro in 2002, the euro replaced the franc and peseta as the sole circulating currency in Andorra. Unlike the three other European microstates outside of the EU, Monaco, San Marino and the Vatican City, which adopted the euro when it was introduced, Andorra did not conclude a monetary agreement with the EU but rather used it unilaterally. These agreements gave the three microstates the right to issue their own euro
Mark (currency) and could be transferred by endorsement, and were accepted as payment. They could also be redeemed. This currency proved to be very stable. Following German unification in 1871, the country adopted the German gold mark (officially known just as the "mark") as its currency in 1873. The name was taken from the mark banco. Initially, the coins and banknotes of the various predecessor currencies, such as the , the , and the guilder, continued to circulate, and were treated as fixed multiples of the new unit of account, similarly to the introduction period of the euro between 1999 and 2002.