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| Start / | Knowledge / | Prints / |
| Accidentals | Changes | Differences | Errors | Fakes | Issue Occasions | Kinds | Mistakes | Parallel Issues | Printers Waste | Quality |
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Knowledge / Prints / Postage Stamp Third Overprints / Errors |
Postage stamp third overprint error: philatelic term for a postage stamp third overprint deviation caused by error |
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Inverted postage stamp third overprint: postage stamp with 180 degrees rotated horizontal postage stamp third overprint caused by error |
Double postage stamp third overprint: postage stamp with twice instead once postage stamp third overprint caused by error |
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