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Stamp paper watermarks also show various designs, letters, numbers and pictorial elements. The process of bringing out the stamp watermark is fairly simple. Sometimes a watermark in stamp paper can be seen just by looking at the unprinted back side of a stamp. More often, the collector must use a few basic items to get a good look at the watermark.
This is done to distinguish stamps with the same color, perforation gauge and denomination but which were printed on paper with different watermarks or without any watermarks—i.e., the only way to positively distinguish a 3-cent, 1908 issue, with double-line watermark, from a 3-cent, 1910 issue, with single-line watermark, is to test for ...
Invert error: Part of the stamp is printed upside-down. Inverted overprint: The overprint on the stamp is printed upside-down. Color error: Stamp is printed in the wrong color(s). Paper error: Stamp is printed on the wrong type of paper which, e.g., may have a different watermark or color than intended.
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Penny Black – World's first postage stamp; Penny Blue – Trial printings from a penny black plate; Two pence blue – Issued for second rate step, at the same time as Penny Black; VR official – First official stamp; Prince Consort Essay; Penny Red – Improved follow-ons to the Penny Black; Archer Roulette – Experimental separation of stamps
The Multiple Script CA watermark. The stamps of the Melita issue were printed by De La Rue using typography, with the exception of the £1 top value which was recess-printed. The typographed stamps were printed on chalk-surfaced paper. Each stamp was printed in two operations, with a key plate and a duty plate. In most cases each plate was ...
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Portrait of Queen Victoria in her Robes of State, 1837 by or, more likely, after Alfred Edward Chalon [2] [3]. The head came from a painting by Alfred Edward Chalon, drawn for the first public appearance of Victoria as Queen on the occasion of her speech at the House of Lords where she prorogued the Parliament of the United Kingdom in July 1837. [4]