is postage intended to meet a certain postage rate that retains full validity for that intended postage rate even after the rate is increased. It does not show a monetary value, or denomination
, on the face. In many English speaking countries, it is called non-value indicator
(NVI) postage. Invented to reduce the cost of printing large issues of low-value stamps to "top-up" old issues, NVI stamps are widely used, including in the United States and many European countries.
The Universal Postal Union
approved the use of non-denominated stamps on international mail in 1995.
Non-denominated postage was first introduced in the United Kingdom in 1989 for domestic mail, in part as a workaround to the problem of fast-changing rates.
The British Post Office
has issued "non-value indicated" Machins
using textual inscriptions "1ST" and "2ND" to indicate class of service rather than a numeric value. It has since introduced a number of variations including those for worldwide and European use, for different weights, and for postcards.
In past years, non-denominated postage issued by the United States
differed from the issues of other countries, in that the stamps retained their original monetary value. Some stamps, such as those intended for local or bulk mail
rate, were issued without denomination.
This practice began in 1975, when there was... Read More