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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.
Postage stamp paper is the foundation or substrate of the postage stamp to which the ink for the stamp's design is applied to one side and the adhesive is applied to the other. The paper is not only the foundation of the stamp but it has also been incorporated into the stamp's design, has provided security against fraud and has aided in the ...
Stamped paper is an often-foolscap piece of paper which bears an imprinted revenue stamp. [ 1 ] [ 2 ] Stamped papers are not a form of postal stationery as although they may contain writing, they are not designed to be used to convey a message.
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.
Changes of perforation, watermark, often occur without any official notice, as do printing errors. In a few cases, even the date of first issue of a stamp has no surviving record. The issuance of multiple types on a single day is an old practice, but usually these were different denominations , and could be numbered in ascending order of value.
True watermark. A true watermark is a recognizable image or pattern in paper that appears lighter or darker than surrounding paper when viewed with a light from behind the paper, due to paper density variations. A watermark is made by impressing a water coated metal stamp or dandy roll onto the paper during manufacturing.
Was the stamp printed using the same printing method, e.g., lithography, engraving, etc.? Is the paper identical to the paper used for genuine stamps? Is the thickness, color, and type of paper (laid or wove) correct? Does the stamp contain the correct watermark as do genuine ones?
An invert may be characterized as an "inverted center" or "inverted frame" when the underlying paper is watermarked or otherwise carries a basic orientation. It is possible for a single-color stamp to be inverted relative to watermark, but this is called an "inverted watermark" rather than an "inverted stamp".