The đồng (銅), also called the piastre, was the currency of South Vietnam from 1953 to 2 May 1978. It was subdivided into 100 xu, also written su.
A South Vietnamese 1 đồng Coin from 1964
5 đồng banknote issued in 1966.
500 đồng banknote issued in 1966.
50 đồng banknote issued in 1972.
French Indochinese piastre
The piastre de commerce was the currency of French Indochina between 1885 and 1954. It was subdivided into 100 cents, each of 2~6 sapèques.
French Indochina 20 Piastres.