This glossary defines nearly 300 terms frequently encountered by stamp collectors and cover collectors. Precise definitions for many philatelic terms do not exist. One collector, dealer or society may define a term in one way, while others will use the term in a slightly different way.
For special uses of some of the terms listed and defined here, contact the appropriate specialist collector group.
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Keytype: A basic stamp design utilized for the issues of two or more postal entities, usually differing in the country name and inscription of value. Many of the earlier colonial issues of Britain, France, Spain, Germany and Portugal are keytypes.
Kiloware: A stamp mixture consisting of miscellaneous postally used stamps on envelope corner paper from various sources. Kiloware is sometimes sold by the kilogram (about 2.2 pounds).