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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 / Fakes |
Fake additional stamp impression: genuine postal stationery with deceitful bogus additional stamp impression or with faked additional stamp impression |
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Genuine additional stamp impression: authentic additional stamp impression with no additional forgery |
Fake additional stamp impression: genuine postal stationery with deceitful bogus additional stamp impression |
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Inverted fake additional stamp impression: genuine postal stationery with deceitful 180 degrees rotated hori-zontal bogus additional stamp impression |
Fake additional stamp impression colour: genuine postal stationery with deceitful changed additional stamp impression colour |
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