Additional Stamp Impressions		A T Ms	Burelages	Cliche Can- cellations	Cuts	Design Prints	Die-cuttings	Embossings	Flawed Designs	Form Prints	Gums
Hand Postmarks	Ink Jet Cancellations	Lumines- cences	Machine Postmarks	Margin Prints	Meter Stamps	Over- prints	Perforations	Postal Stationeries	Press Marks	Print Substrates	Punches
Reverse Prints	Roulettings	Second Overprints	Separate Productions	Se-tenants	Sheet Stamps	Silk Threads	Stamp Booklets	Stamped Envelope Overprints		Stamp Impressions	Tress Rosettes
Watermarks	Others

Knowledge / Mistakes / Silk Threads

Silk Threads Mistake: printers term for a deviation caused by a paper with silk thread mistake

Silk Thread Colour Mistake: deviation from the intended silk thread colour caused by a mistake

Shifted Silk Thread: deviation from the intended silk thread position

Missing Silk Thread: postage stamp without silk thread caused by a mistake

Oblique Silk Thread: postage stamp with silk thread shifted out of alignment

Double Silk Thread: postage stamp printed on paper with double silk thread