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| Start / | Knowledge / | Prints / |
| Accidentals | Changes | Differences | Errors | Fakes | Kinds | Mistakes | Parallel Issues | Printers Waste | Quality |
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Knowledge / Prints / Additional Stamp Impressions / Fakes |
Fake Additional Stamp Impression: original 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: original postal stationery with deceitful bogus fake additional stamp impression |
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Fake Additional Stamp Impression Colour: original postal stationery with deceitful changed additional stamp impression colour |
Inverted Fake Additional Stamp Impression: original postal stationery with deceitful inverted bogus fake additional stamp impression |
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