This is one of two stamps issued by South Vietnam on in April of
1965 to commemorate the mythological founders of Vietnam.
Lac Long Quan, the Dragon Lord of Lac, the first Vietnamese king, married Au Co,
a Chinese goddess, who bore him 100 sons. She moved into the mountains with fifty of
her sons while the other fifty remained in the lowlands with their father. His eldest son
succeeded him and is regarded as the founder of the Hung Vuong (Hung Kings), the
first Vietnamese dynasty. The sons who moved into the mountains may be the ancestors
of the modern Muong minority whose culture is very similar to that of the ethnic Vietnamese.