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.
Switzerland–European Union relations
On 6 September 2011, the Swiss franc effectively became fixed against the euro: the Franc had always floated independently until its currency appreciation became unacceptable during the eurozone debt crisis. The Swiss National Bank set an CHF/EUR peg that involved a minimum exchange rate of 1.20 francs to the euro, with no upper bound in place. The Bank committed to maintaining this exchange rate to ensure stability. The peg was abandoned on 15 January 2015, when renewed upward pressure on the Swiss franc exceeded the Bank's level of tolerance.