postage stamp error

postage stamp error is a postage stamp or errors, freaks, and oddities.

Also recorded as variety; variety philately; variety postage stamp.

Overview

Catalogue entries for stamps state issue, perforation, gum and certification. VALÉORINE records this subject so that lots referring to it can be described consistently.

In detail

unintended deviations in the production of postage stamps

Sources

Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.

reference work · Reputable secondary · Wikipedia
“Postage stamp error”, English Wikipedia, consulted as further reading
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reference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1721643: postage stamp error
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