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  2. Letterpress printing - Wikipedia

    en.wikipedia.org/wiki/Letterpress_printing

    Letterpress printing is a technique of relief printing for producing many copies by repeated direct impression of an inked, raised surface against individual sheets of paper or a continuous roll of paper. [ 1] A worker composes and locks movable type into the "bed" or "chase" of a press, inks it, and presses paper against it to transfer the ink ...

  3. Postage stamp design - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp_design

    The usual shape of a postage stamp is a rectangle, this being an efficient way to pack stamps on a sheet. A rectangle wider than tall is called a "horizontal design", while taller than wide is a "vertical design". A number of additional shapes have been used, including triangles, rhombuses, octagons, circles, and various freeform shapes ...

  4. Postage stamps and postal history of the United States

    en.wikipedia.org/wiki/Postage_stamps_and_postal...

    Benjamin Franklin — George Washington The First U.S. Postage Stamps, issued 1847. The first stamp issues were authorized by an act of Congress and approved on March 3, 1847.[ 20] The earliest known use of the Franklin 5¢ is July 7, 1847, while the earliest known use of the Washington 10¢ is July 2, 1847.

  5. Self-adhesive stamp - Wikipedia

    en.wikipedia.org/wiki/Self-adhesive_stamp

    Self-adhesive stamp. A self-adhesive stamp is a postage stamp with a pressure-sensitive adhesive that does not require moistening in order to adhere to paper. They are usually issued on a removable backing paper. Stamp collectors have criticized the format, because the rubber-based adhesive used tends to yellow the stamps progressively.

  6. List of Machin stamps - Wikipedia

    en.wikipedia.org/wiki/List_of_Machin_stamps

    All barcoded stamps are self-adhesive. Existing definitive stamps issued from 15 February 1971 to 31 January 2022 remain valid until 31 January 2023: since 31 March 2022, they can be indefinitely exchanged for the barcoded series. [18] The 2022 issue was the last release in the Machin series prior to the death of Elizabeth II.

  7. Postage stamps and postal history of Great Britain - Wikipedia

    en.wikipedia.org/wiki/Postage_stamps_and_postal...

    The postal history of the United Kingdom is notable in at least two respects: first, for the introduction of postage stamps in 1840, and secondly for the establishment of an efficient postal system throughout the British Empire, laying the foundation of many national systems still in existence today. As the originator of postage stamps, the UK ...

  8. Seal (emblem) - Wikipedia

    en.wikipedia.org/wiki/Seal_(emblem)

    Seal (emblem) A seal is a device for making an impression in wax, clay, paper, or some other medium, including an embossment on paper, and is also the impression thus made. The original purpose was to authenticate a document, or to prevent interference with a package or envelope by applying a seal which had to be broken to open the container ...

  9. British embossed postage stamps - Wikipedia

    en.wikipedia.org/.../British_embossed_postage_stamps

    Three values of the octagonal stamps were introduced to cover higher foreign and registered postal charges on the following dates: 1 Shilling (green) - 11 September 1847, 10d (brown) - 6 November 1848, 6d (mauve/lilac/purple) - 1 March 1854 The 1 shilling was the first British postage stamp to bear a value above 2d. [2]

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