Postage due is a term used for mail sent with insufficient postage. Postage Due stamp is a stamp added to an underpaid piece of mail to indicate the extra postage due.
The First Postage Due stamps were issued by France in 1859 affixed at delivery before being dispatched to recipients. Some countries used regular stamps also. They were sometimes not affixed to individual letters but to bulk mail wrappers or to the top letter on the wrapper.
A number of countries issued postage used stamps with inscription such as “Postage Due”, “Porto” etc. A number of countries have discontinued the use of Postage due stamps. Britain issued theirs in 1914 continued the same design till 1970 and discontinued in 2000. The USA terminated its use in 1986.
This field of Philately is also unique as postally used “Postage Due Stamps ” with date cancellations , wrappers etc make an interesting collection. Some postal administrations sold mint stamps, FDCs,etc to Philatelists which are also available for study and collection.
Postage Due stamps issued by Rhodesia on 17 July 1965. The theme on stamps is Posthorn.