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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 / Postage Stamp Overprints / Safety Measures |
Postage Stamp Overprint Safety Measure: safety measures that was carried out as a postage stamp overprint |
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Moir Postage Stamp Overprint: postage stamp that has been printed with a wavy line postage stamp overprint to prevent forgeries |
Chalky Postage Stamp Overprint: chalk or kaolin postage stamp overprint over the design print whereat the design print is partly destroyed during soaking |
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