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| Accidentals | Changes | Designs | Errors | Fakes | Issue Occasions | Kinds | Mistakes | Parallel Issues | Printers Waste | Quality | Safety Measures |
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Knowledge / Punchings / Issue Occasions |
Punching issue cccasion: 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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