The National Bank of Cambodia was established in 1954. The first ever banknote issued by the Cambodian bank was in 1955. This series of banknote consists of four denominations i.e. 1 Riel, 5 Riel, 10 Riel and 50 Riel. Riel is an official currency of Cambodia and it is denoted by KHR.
It is noted that the "Banque Nationale Du Cambodge" was printed at the reverse of the note. Indeed, this is a French words which mean The National Bank of Cambodia. The Cambodian was once under the French colonial until it achieved its Independence in 1953.
The pattern and design of 50 Riel was similar to the notes issued by the Institut d'Emission des Etats du Cambodge, du Laos et du Vietnam, a French Indochina currency (Piastres) commonly used in Cambodia, Loas and Vietnam during the French colonial.