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
The franc fell 8.8% against the euro, 9.5% against the dollar, and at least 8.2% against all 16 of the most active currencies on the day of the announcement. It was the largest plunge of the franc ever against the euro. The SNB had previously set an exchange rate target in 1978 against the Deutsche mark and maintained it, although at the cost of high inflation. Until mid-January 2015, the franc continued to trade below the target level set by the SNB, though the ceiling was broken at least once on 5 April 2012, albeit briefly.