OLD HONG KONG BANK NOTE
The one-cent note, introduced in WW2 because of metal shortage, ceased to be legal in . It was important in settling debts but cost two cents to print! What made them unique and remarkable was they were only printed on one side and measured just 3.5 inches by 1.5 inches! I served in HK in and I have this used note, bearing the picture of The Queen. It's a collector's item and needs a good post-colonial home. Free postage.