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| Accidentals | Changes | Designs | Errors | Fakes | Issue Occasions | Kinds | Mistakes | Parallel Issues | Printers Waste | Quality |
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Knowledge / Punchings / Issue Occasions |
Punching Issue Occasion: summary of the different punching occasion reasons |
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Category Change Punching: postage stamps punched to change the stamp category |
Specimen Punching: postage stamp punched for the use as specimen to avoid postal use |
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Transport Punching: punchings between two ATM postage stamp design prints to ensure a uniform paper feed |
Decorative Punching: postage stamp in which a punching was used as a design element |
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