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  2. Watermark - Wikipedia

    en.wikipedia.org/wiki/Watermark

    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.

  3. Postage stamp paper - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp_paper

    Elephant head watermark used on early stamps of India: A watermark is created in the paper by the mould or the Dandy roll and can be letters or designs. India SC#19-25; U.S. SC#264-278; Wove: Wove paper as magnified from the back of the US 1890-923 2c. Notice the left to right direction of the fibers.

  4. Security printing - Wikipedia

    en.wikipedia.org/wiki/Security_printing

    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.

  5. EURion constellation - Wikipedia

    en.wikipedia.org/wiki/EURion_constellation

    The EURion constellation is made up of five rings. The EURion constellation (also known as Omron rings [1] or doughnuts [2]) is a pattern of symbols incorporated into a number of secure documents such as banknotes, cheques, and ownership title certificates designs worldwide since about 1996.

  6. Postage stamp - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp

    The main components of a stamp: 1. Image 2. Perforations 3. Denomination 4. Country name. A postage stamp is a small piece of paper issued by a post office, postal administration, or other authorized vendors to customers who pay postage (the cost involved in moving, insuring, or registering mail).

  7. Security Printing and Minting Corporation of India - Wikipedia

    en.wikipedia.org/wiki/Security_Printing_and...

    It is engaged in the manufacture / production of currency and banknotes, security paper, non-judicial stamp papers, postage stamps and stationery, travel document viz., passport and visa, security certificates, cheques, bonds, warrants, special certificates with security features, security inks, circulation and commemorative coins, medallions ...

  8. United States postal notes - Wikipedia

    en.wikipedia.org/wiki/United_States_postal_notes

    This was a series of 18 stamps available at U.S. post offices from 1945 to 1951. They were used for sending small amounts of money. Printed in grey and black with a simple uniform design, they ranged in value from 1 to 90 cents. Their Scott catalogue designations are PN 1 to 18. [9] In used condition collectors can purchase all of them at very ...

  9. Invert error - Wikipedia

    en.wikipedia.org/wiki/Invert_error

    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". Depending on the positioning of stamps within their sheet, the invert may be perfectly centered (as with the Inverted Jenny), or offset. Inverted overprint on a 1919 stamp of Siberia