Monograph of Hungarian Stamps
The monograph covers the history of Hungarian stamp collecting and Hungarian stamp issues from their beginnings to 1979. It is one of the most comprehensive reference wo…
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Offset Impressions
An offset impression is a mirror-image ink transfer appearing on the reverse of a stamp. Depending on how it is produced, several forms can be distinguished, including m…
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Offset Printing
Offset printing is a planographic printing process and one of the most widely used methods in modern stamp production. The inked image is transferred from the printing p…
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Paper Fold
A paper fold is a printing error caused by creasing of the paper. When the sheet is later flattened, the affected area may appear as a characteristic unprinted white str…
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Partial Missing Print
A partial missing print occurs when ink cannot reach part of the printing surface because of an obstruction or a defect in the paper, such as a folded sheet, paper creas…
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Perforation Varieties
Stamp perforations are intended to place the printed design neatly and centrally within the perforation lines. Incorrect machine settings, misfed paper, creasing or fold…
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Perforations: Types, Measurement, Condition and Forgeries
Perforation is the most common method of allowing stamps to be separated easily from a sheet without scissors. Perforation gauge, method and condition are important for …
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Philatelic Literature
Countless publications on stamps and stamp collecting have appeared over the past century and more. The following works are particularly useful for anyone interested in …
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Photogravure
In photogravure, the surface of the copper printing cylinder is etched with a regular screen of tiny cells of varying depth that hold the printing ink.
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Plate Flaw
A plate flaw is one of the most common printing varieties. It is a recurring feature caused by a defect, damage or wear in the printing plate and appears consistently on…
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Postage Due Stamp
A postage due stamp was used to account for unpaid or insufficient postage and any additional charge collected after a postal item had entered the postal system.
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Postage Stamp
A postage stamp is a small, usually paper, item that can be affixed to a postal item such as a letter, postcard or parcel to show payment of postage or additional postal…
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