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  2. Penny Black printing plates - Wikipedia

    en.wikipedia.org/wiki/Penny_black_printing_plates

    The roller was sufficient in size to take between 2 and 8 impressions from the original master die. Once these images were complete on the roller, this was in turn hardened. A sheet of soft steel was cut, sufficient in size to take 240 impressions of the stamps arranged in twenty horizontal rows of twelve.

  3. Security printing - Wikipedia

    en.wikipedia.org/wiki/Security_printing

    Security printing is the field of the printing industry that deals with the printing of items such as banknotes, cheques, passports, tamper-evident labels, security tapes, product authentication, stock certificates, postage stamps, and identity cards.

  4. Errors, freaks, and oddities - Wikipedia

    en.wikipedia.org/wiki/Errors,_freaks,_and_oddities

    An oddity is something that is within the bounds of usability for the stamp, but still has a distinctive appearance. The usual sort of oddity is misregistration on a multi-colored stamp, which can result in shirts apparently with two sets of buttons, eyes above the top of a person's head, and so forth.

  5. Postage stamp separation - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp_separation

    Also in 1854 a "rotary process" was patented by William Bemrose and Henry Howe Bemrose.The Bemrose machine was designed as a rouletting machine. As such, it proved impracticable for stamp separation but in 1856 was successfully converted to a perforating machine by George C. Howard of Toppan Carpenter, stamp printers for the American Government. [3]

  6. Idaho State Police - Wikipedia

    en.wikipedia.org/wiki/Idaho_State_Police

    The Idaho State Police (ISP) is the statewide law enforcement agency for the State of Idaho.It began as the Bureau of Constabulary, created on May 18, 1919, [1] under the new Department of Law Enforcement, to detect and investigate crime, "order abatement of public nuisances and to enforce such orders by appropriate court action, to suppress riots, prevent wrongs to children and animals that ...

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