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| Start / | Knowledge / | Stamps / |
| Accidentals | Changes | Designs | Differences | Errors | Fakes | Kinds | Mistakes | Parallel Issues | Printers Waste | Quality |
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Knowledge / Stamps / Additional Stamp Impressions / Accidentals |
Additional stamp impression accidental: philatelic term for an additional stamp impression deviation caused by accidental |
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Additional stamp impression colour accidental: philatelic term for a deviation from the intended additional stamp impression colour caused by accidental |
Additional stamp impression text accidental: philatelic term for a deviation in the additional stamp impression text caused by accidental |
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Shifted additional stamp impression: postal stationery with shifted additional stamp impression to another position as intended caused by accidental |
Additional stamp impression shadow printing: postal stationery with seeming double the same additional stamp impression strong and as shadow caused by accidental |
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Additional stamp impression mirrow image: postal stationery with the wrong way round additional stamp impression on reverse caused by accidental |
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Oblique additional stamp impression: postal stationery with out of alignment shifted additional stamp impression caused by accidental |
Light additional stamp impression: postal stationery with clear but too light additional stamp impression caused by accidental |
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Strong additional stamp impression: postal stationery with clear but too strong additional stamp impression caused by accidental |
Additional stamp impression plate with accidental: philatelic term for an additional stamp impression printed from a damaged printing form caused by accidental |
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