History of Switzerland
Switzerland's most important exports during the war were precision machine tools, watches, jewel bearings (used in bombsights), electricity, and dairy products. During World War Two, the Swiss franc was the only remaining major freely convertible currency in the world, and both the Allies and the Germans sold large amounts of gold to the Swiss National Bank. Between 1940 and 1945, the German Reichsbank sold 1.3 billion francs worth of gold to Swiss Banks in exchange for Swiss francs and other foreign currency.
Swiss franc
In 1907, the Swiss National Bank took over the issuance of banknotes from the cantons and various banks. It introduced denominations of 50, 100, 500 and 1000 francs. 20-franc notes were introduced in 1911, followed by 5-franc notes in 1913. In 1914, the Federal Treasury issued paper money in denominations of 5, 10 and 20 francs. These notes were issued in three different versions: French, German and Italian. The State Loan Bank also issued 25-franc notes that year. In 1952, the national bank ceased issuing 5-franc notes but introduced 10-franc notes in 1955. In 1996, 200-franc notes were introduced whilst the 500-franc note was discontinued.