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.
Coins of the Swiss franc
Since 2004, moreover, the existing pure nickel 20 centime coins of the years 1881–1938 have been withdrawn from circulation because machines cannot detect them. Today, all the coins except the 5 centime coin (aluminum-bronze since 1981) are in a copper-nickel (cupronickel) alloy. Seven coins (1995) are currently in circulation: