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| Start / | Knowledge / | Prints / |
| Accidentals | Changes | Differences | Errors | Fakes | Kinds | Mistakes | Parallel Issues | Printers Waste | Safety Measures | Quality |
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Knowledge / Prints / Print Substrates / Accidentals |
Paper Accidental: philatelic term for a paper deviation caused by an accidental |
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Paper Colour Accidental: philatelic term for a deviation caused by accidental from the intended paper colour |
Toned Paper: during the print- |
Thinner Paper: postage stamp with caused by accidental printed on paper with a lower grammage as intended |
Thicker Paper: postage stamp with caused by accidental printed on paper with a higher grammage as intended |
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Repaired Paper Web: caused by accidental damaged paper web repaired before the design print was made |
Paperfold: during the printing process caused by accidental arose wrinkle formation |
Paper With Alien Element: during the paper production caused by accidental included alien element |
Sheet Turn-Over: paper sheet turned over caused by accidental before the design print, overprint or perforation was made |
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Oily Paper Print: postage stamp with caused by accidental seeming printed on oily paper caused by to much printing oil (glassy paper) |
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