The first Hong Kong resident (front) to buy the special-edition HK$20 Olympic banknote leaves Bank of China in Central, Hong Kong, July 16, 2008. Four million banknotes have been officially issued in Hong Kong, Macao and some overseas regions. There are three categories of banknotes: a single bill, a set of four and a set of 35. [Xinhua]

A Hong Kong resident shows his special edition HK$20 Olympic banknotes at Bank of China in Central, Hong Kong, July 16, 2008.Four million banknotes have been officially issued in Hong Kong, Macao and some overseas regions. There are three categories of banknotes: a single bill, a set of four and a set of 35. [Xinhua]