The leu was introduced in 1867, when Romania joined the monetary system of the Latin Monetary Union. The leu was primarily tied
to the french gold franc. Numerous reforms took place after the World War I and II; nowadays Romania is the first east european
country to have introduced the polymer banknotes.
In 2005 the re-denomination reform took place, at 10,000:1 ratio. 1 new leu equals 100 bani.