<P> In 1933, a nickel 5 - franc coin was minted, but was soon replaced by a large aluminum - bronze 5 - franc coin . </P> <P> The events of Second World War also affected the coinage substantially . In 1941, aluminum replaced aluminum - bronze in the 50 centimes, and 1, 2, and 5 francs as copper and nickel were diverted into the War Effort . In 1942, following German occupation and the installation of the French Vichy State, a new, short lived series of coins was released which included holed 10 and 20 centimes in zinc . 50 centimes, and 1 and 2 francs were aluminum . In 1944 this series was discontinued and withdrawn and the previous issue was resumed . </P> <P> Following the war, rapid inflation caused denominations below 1 franc to be withdrawn from circulation while 10 francs in copper nickel were introduced, followed by reduced size 10 - franc coins in aluminum - bronze in 1950, along with 20 and 50 - franc coins of the same composition . In 1954, copper - nickel 100 francs were introduced . </P> <P> In the 1960s, 1 and 2 (old) franc aluminum coins were still circulating, used as "centimes". </P>

When did the £20 note last change