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 identity card
When the 1977 version of the Swiss identity card was issued, the first issue was still printed in German, French, and Italian. Later on, Romansch was added to the identity cards (along with English) after it became a national Swiss language in the new 1999 Swiss constitution that followed the 6 March 1996 referendum of Swiss voters.