Definitive
stamps are regular issue stamps used for ordinary postage and
kept in general circulation for a number of years as differentiated from
commemoratives which are issued for a relatively short period of time.
Definitive stamps
are also known as regular or general postage.
The definitive stamp shown at right is the 90 cent
Oliver
Hazard Perry issued on April 12, 1870 - Scott Catalog #144.
It was produced by the National Bank Note Company on white wove paper.