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A T Ms	Coatings	Hand Postmark Cancellations	Margin Watermark	Perforations	Postage Stamp Burelages	Postage Stamp Design Prints	Postage Stamp Overprints	Postage Stamp Reverse Prints
Postal Stationeries		Postal Stationery Design Prints	Postal Stationery Overprints	Print Substrates	Punchings	Postal Shipments	Stamp Impressions	Combinations

Knowledge / Safety Measures / Others / Postage Stamp Overprints

Postage stamp overprint safety measure: safety measures that was carried out as a postage stamp overprint

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

Security text stamp overprint: postage stamp with a text overprint using altered letters to prevent forgeries