World War I broke the Latin Monetary Union and resulted in prices rising severalfold in Italy. Inflation was curbed somewhat by Mussolini, who, on 18 August 1926, declared that the exchange rate between lira and pound would be £1 = 90 lire—the so-called Quota 90, although the free exchange rate had been closer to 140–150 lire per pound. In 1927, the lira was pegged to the U.S. dollar at a rate of 1 dollar = 19 lire. This rate lasted until 1934, with a separate "tourist" rate of US$1 = 24.89 lire being established in 1936. In 1939, the "official" rate was 19.8 lire. After the Allied invasion of Italy, an exchange rate was set at US$1 = 120 lire (1 British pound = 480 lire) in June 1943, reduced to 100 lire the following month. In German-occupied areas, the exchange rate was set at 1 Reichsmark = 10 lire. After the war, the Roman mint first issued the first 1, 2, 5 and 10 lira coins (6 September 1946). They were officially set up on 21 December of the same year and were used up to 1953–4.[7] The value of the lira fluctuated, before Italy set a peg of US$1 = 575 lire within the Bretton Woods System in November 1947. Following the devaluation of the pound, Italy devalued to US$1 = 625 lire on 21 September 1949. This rate was maintained until the end of the Bretton Woods System in the early 1970s. Several episodes of high inflation followed until the lira was replaced by the euro.