点解香港的銀行只兌現新鈔美元?

first reason is there are SO MANY counterfeit America money in the world.
second reason is when X bank do exchange the dollar to Y bank, they will face the same quility selection.
to minimize their loss the teller have to give customer such " hard time ".

2009-09-16 01:15:45 補充：
you should try America banks in HK. ex: citibank, chase, or bank of american...
they should take any legal bills.

GARY既回答係著重於新設計及舊設計，
而唔係新鈔同舊鈔喎。
而我所知，美元設計已有多年沒有更改。

点解香港的銀行只收新鈔﹖ 一字 o甘 簡單﹕ 因為其他客人去銀行用港幣換美鈔﹐ 花少少唔要, 破少少唔要﹐ 所以佢地咪 o甘 緊張囉。 無得投訴﹐最多唔幫襯佢。

Because the old banknote does not have more security features than the new design. Also, the old design can be easily used for counterfeiting.

多謝回答, 但我好想知佢地点解拒收舊鈔。

美国遊客和移民回港渡假可用提款咭到提款機提款， 有美國銀行嘅提款咭， 在中國建設銀行嘅提款機攞錢， 免收手續費， 好過將D現金換來換去。