This is a rare 1955 One Hundred (100) Francs French coin featuring a wistful Liberty Head and Value on Reverse. It's composition is copper-nickel. It's size is approximately .9375 inches in diameter, the size of a U.S. Quarter.

The events of the Second World War affected the coinage substantially in France. In 1941, aluminium replaced aluminium-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 aluminium. In 1944 this series was discontinued and withdrawn and the previous issue was resumed.

Following the war, rapid inflation caused denominations below 1 franc to be withdrawn from circulation while 10 francs in copper nickel were introduced, followed by reduced size 10-franc coins in aluminium-bronze in 1950, along with 20 and 50-franc coins of the same composition.
 
This is a 1955 French 100 Francs Coin composed of copper-nickel and appearing silver colored.   It's wistful and unique Liberty Head design and historic significance makes it a great addition to any coin collection.