What currency is this!

Cambodia Ruier, also known as: Riel (Riel Original: CR.; J Ri. Standard symbol: KHR), Cambodia's legal currency.
1863
On August 11, 1863, Cambodia King Norolon I signed a treaty with France to make France a protected country in Cambodia. And Laos and Vietnam are known as French India branch.
-1903
The first bank currency of the colony was issued in 1875. The face value was Mexican silver dollars and Piast, and the issuance right belonged to the Bank of India. These currencies are issued by its coastal defense and Saigon Branch, and
is the legal currency of the entire Indian branch. Beginning in 1903, the currency face value was only Piast.
1941 1954
From 1941 to 1945 during the Second World War, French India Zhi Na was first by the French Vechi government-the alliance of the Japanese at the time-later ruled by the Japanese by themselves by themselves. Essence After the surrender of Japan, after the France returned to the Indian branch, it established the Indian Branch Federation to give each country a limited independent independence within Federal Federation. This state lasted until Cambodia was completely independent in 1954.
During this independent transition period, the issuance of currency was issued by the original Indian branch bank from Institut D ’Emissions des sets ethambodge, LaOS ET Vietnam. They have established Cambodia, Laos and Vietnamese branches. Branch of various countries are responsible for issuing their domestic currencies. The front of banknotes is uniformly designed, but the back varies from the country to the country.
1955 1975
It after Cambodia's independence from France until October 1955, Cambodia was unable to issue its own currency. After that, the National Bank of Cambodia was responsible for the issuance of all currencies until April 17, 1975, and Khmer Rouge captured Phnom Penh.
The advent of Khmer River rule announced a new era. The currency was abolished and the postal service was stopped. Although the state has stepped back to a system of objects, a set of currency is still prepared and printed. However, unfortunate designers are still under the same destiny under the rule of hundreds of thousands of Khmer Rouge, and they are killed in the sinful piles.
1979 1990
After the liberation of Phnom Penh on January 7, 1979, the Cambodian People's Democratic Republic announced that a new set of currencies are being prepared. Circulation began on March 20, 1980. While retaining the currency of neighboring socialist countries, there are no signatures on these currencies, depicting the rural scenery in Cambodia. Together with the currency issued in 1987, they were used until the early 1990s. The severe economic crisis made small face value currency abandoned.

Cambodia Currency: 100 Ryl