A series of four Dong, from the former cotton series of Vietnamese banknotes. 9,000 VND is equal to around 39¢ (US); the current banknotes are made from plastic polymer. 1,000 VND is worth less than 5¢ (US). Due to the denominations of the currency, there may be times where you won't receive exact change back when making a purchase due to how ineffective a single 1,000 bill is in regard to value.