Additional Stamp Impressions		A T Ms	Burelages	Cliche Can- cellations	Cuts	Design Prints	Die-cuttings	Embossings	Form Prints	Gums
Hand Postmarks	Ink Jet Can- cellations	Lumines- cences	Machine Postmarks	Meter Stamps	Margin Prints	Overprints	Pencancel- lations	Perforations	Postal Stationeries	Press Marks
Print Substrates	Punches	Reverse Prints	Roulettings	Second Overprints	Separate Productions	Se-tenants	Sheet Stamps	Silk Threads	Stamped Envelope Overprints
Stamp Booklets	Stamp Impressions	Third Overprints	Tress Rosettes	Watermarks	Without Separation	Others

Knowledge / Accidentals / Print Substrates

Accidental Paper: philatelic term for an accidental paper

Repaired Paper: damaged paper roll repaired before design print

Paper With Alien Element: during the production accidental included alien element

Paperfold: during the printing process accidental folded paper

Paper Colour Accidental: deviation from the intended paper colour caused by an accidental

Toned Paper: during the printing process accidental in a light colour toned paper

Thiner Paper: postage stamp printed on thiner paper as intended

Thicker Paper: postage stamp printed on thicker paper as intended

Sheet Turn-Over: paper sheet turned over before design print, overprint or perforation

Oily Paper Print: seeming on oily paper printed postage stamp caused by to much printing oil

Porous Paper: paper produced with not enough glue with design print visible on reverse