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

Knowledge / Errors / Luminescences

Luminescence Error: philatelic term for a deviation caused by a luminescence error

Missing Fluorescence: postage stampe caused by an error without fluorescence

Missing Phosphorus Overprint: postage stamp caused by an error without phosphorus overprint

Missing Phosphorus Bar: postage stamp caused by an error without phosphorus bar overprint

Double Phosphorus Bar: postage stamp caused by an error twice overprinted with a phosphorus bar

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