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Some dramatic color variations occur as a result of chemical action; such stamps are called color changelings. Examples include sulfuretting (often misnamed "oxidation"), a reaction involving lead that may turn a blue or green stamp to black, and the effects of salt water, famously seen in stamps of New South Wales recovered from the wreck of ...
Invert error: Part of the stamp is printed upside-down. Inverted overprint: The overprint on the stamp is printed upside-down. Color error: Stamp is printed in the wrong color(s). Paper error: Stamp is printed on the wrong type of paper which, e.g., may have a different watermark or color than intended.
Each stamp featured an ornate colored frame enclosing a black-and-white image of some means of (or adjunct to) modern rapid transportation. In the standard American Scott catalog, these six stamps carry the numbers 294–299. The first day of issue for the stamps was May 1, 1901. [1]: 60–61 The two color printing left the possibility of errors.
These stamps were larger in size than normal definitive issues, with only 280 stamp images contained on the printing plate (400 images was standard for the Presidential series). Notable also is the red-violet color chosen for the 3¢ stamps, a brighter hue than the traditional purple. [citation needed] Famous American Series of 1940
The three-skilling stamp was normally printed in a blue-green color, with the eight-skilling stamp being printed in yellowish orange. It is not known exactly what went wrong, but the most likely explanation is that a stereotype of the eight-skilling printing plate (which consisted of 100 stereotypes assembled into a 10 × 10 array) was damaged ...
The catalogue value of the invert is worth little more than the normal. The stamp, printed on Giori press in plates of 200, was designed by Herbert Sanborn and engraved by C. A. Brooks. 121,440,000 normal stamps were printed and 40,270,000 of the inverted reprint were produced. [3] Normal stamp
This 2005 stamp of the Faroe Islands is a typical example of modern stamp design: minimal text, intense color, artistic rendering of a country-specific subject.. Postage stamp design is the activity of graphic design as applied to postage stamps.
The 7d, 8d and 9d stamps had the value indicator behind the bust. [8] 8d Vermillion 8d Light turquoise blue 6 Jan 1969 [6] 9d Dark green 8 Aug 1967 [3] 10d Drab 1 Jul 1968 [7] The background of the 10d and 1/- stamps had a gradient. 1/- Pale violet 5 Jun 1967 [4] 1/6 Blue and deep blue 8 Aug 1967 [3] 1/9 Orange and black 5 Jun 1967 [4] 2/6 Peat ...