Franc
The Swiss franc (ISO code: CHF or 756), which appreciated significantly against the new European currency from April to September 2000, remains one of the world's strongest currencies, worth today around five-sixths of a euro. The Swiss franc is used in Switzerland and in Liechtenstein. Liechtenstein retains the ability to mint its own currency, the Liechtenstein franc, which it does from time to time for commemorative or emergency purposes.
Kosovo and the euro
Before the establishment of UNMIK, Kosovo (as part of Serbia) was bound to Yugoslav monetary policy, and the Yugoslav dinar. However, war-time inflation and tensions with the Federal Republic of Yugoslavia had severely discredited the Yugoslav dinar. As a result, many preferred to use and hoard foreign currencies instead of relying on the dinar. The most frequently used foreign currency was the German mark, although the U.S. dollar and Swiss franc were also widely used.