Interverted
The wrong way round; cart before the horse. As in "double Geneva," cut the wrong way.
Interrupted Perforation
For stamps in coil form for delivery by automatic machines, the ordinary perforations tend to weaken the paper too much
In Relievo
The Italian term for engraving in relief as for typographical printing.
In Intaglio
Engraving in recession, as in steel-plate or copperplate engraving, is In Intaglio; it is also applicable to photogravure. It is
India Paper
A thin fine paper, imported chiefly from China, much used by engravers for taking die proofs.
Imprint
The name of printer or place of printing, on margins of stamp sheets; sometimes on the actual stamps beneath the
Imprimatur
(Latin for "let it be printed"). It was the custom in Great Britain, as each printing plate was completed, and
Impressed Watermarks
See Watermarks.
Imperforate, Contraction Imperforation
A stamp which has not been perforated or rouletted. Imperf. Between: a pair or more stamps lacking the perforation between
Imitations of Watermarks
See Watermarks.
Imitations of Stamps
See Official Stamps.
Fake
A genuine stamp that has been tampered with fraudulently to increase its supposed value to collectors. A normal stamp cunningly
Guilotine Perforation
A single straight line of perforating punches, perforating one line at a time in one direction; operated on the up-and-down
Guide Dots, Guide Lines
Marks used as guides in entering plates or laying down lithographic stones in alignment. They may merge in the stamp
Grille
A plain rectangular embossing on some early United States and Peruvian stamps. It was effected by rolling cylinders with pyramidal