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| Start / | Knowledge / | Prints / |
| Accidentals | Categories | Changes | Designs | Differences | Errors | Fakes | Issue Occasions |
| Kinds | Mistakes | Parallel Issues | Printers Waste | Safety Measures | Quality | ||
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Knowledge / Prints / Overprints / Quality |
Overprint Quality: subjective perception of a overprint qualit |
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perfect centered overprint |
very good centered overprint |
good centered overprint |
slightly off centre overprint |
somewhat off centre overprint |
clearly off centre overprint |
Overprint Quality Grades: subjective perception of an overprint quality in different grades and conditions |
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Faultless Overprint: overprint without conditional of manufacturing or wrong handling originated quality defect |
Faulty Overprint: common term for an overprint with conditional of manufacturing or wrong handling originated quality defect |
Washed-out Overprint: overprint which lost his colour intensity by water |
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