Errors, freaks, and oddities
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In philately, errors, freaks, and oddities collectively refer to the wide variety of mistakes that may occur during the production of postage stamps.
The "Inverted Jenny", issued in 1918.
A diagonal paper fold (Austria 1850).
Cliché error pair, right stamp with “Cinco” instead of “Diez" (Santander 1886).
The Spanish word "inmediata" was misspelled on this stamp ("immediata"), issued in 1899. This was corrected when the Cuban Republic had it reprinted in November, 1902.
Postage stamp design error
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A postage stamp design error is a mistake made during the design phase of the postage stamp production process. Design errors most commonly occur as minor mistakes, such as a missing letter in the bin
Errors, freaks, and oddities
…The following is a list of the major types of errors. Design error: The picture may be of the wrong subject, maps may show wrong borders, the inscription may be factually wrong, text may be misspelled, etc. Value error…
This Philippine stamp of 1932 is captioned Pagsanjan Falls, but actually depicts Vernal Fall
Stamp dedicated to the 150th anniversary of the founding of Newcastle in which the artist depicted his own father instead of the explorer Lt. John Shortland, who discovered the Hunter River (New South Wales).