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  2. Stamp condition - Wikipedia

    en.wikipedia.org/wiki/Stamp_condition

    Stamps sell at a considerable premium if they are in this condition. Lightly hinged (LH) is a mint stamp which was hinged but only slightly disturbed. Heavily hinged (HH) is a mint stamp which was hinged and damaged in the process. Hinge remaining (HR) is a mint stamp which has part of a stamp hinge on the back.

  3. Errors, freaks, and oddities - Wikipedia

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

    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. Perforation error: Perforations are missing on one or several sides or put in the wrong place (e.g. diagonally). As perforations may be removed by cutting them off ...

  4. Philatelic fakes and forgeries - Wikipedia

    en.wikipedia.org/wiki/Philatelic_fakes_and_forgeries

    One would imagine that overprints should be easier for a forger to falsify. It is just a simple matter of applying a few letters to a stamp with black ink. Paying attention to detail can reward a philatelic sleuth. The stamps of Bangkok from the 1880s were produced by overprinting each stamp a single letter "B" on stamps of the Straits Settlements.

  5. 12 of the Rarest U.S. Mint Error Coins Worth a Fortune - AOL

    www.aol.com/finance/12-rarest-u-mint-error...

    Estimated value: Between $250,000 and $2 million The 1974 Aluminum Lincoln Cent is an elusive and highly valuable coin, notable for its unique composition. In 1974, the U.S. Mint experimented with ...

  6. Postage stamp design error - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp_design_error

    Design errors most commonly occur as minor mistakes, such as a missing letter in the binomial name of an organism depicted on the stamp, but some have been major gaffes, such as a map appearing to lay claim to another country's territory, or the depiction of the wrong person on the stamp.

  7. Postage stamp problem - Wikipedia

    en.wikipedia.org/wiki/Postage_stamp_problem

    For example, suppose the envelope can hold only three stamps, and the available stamp values are 1 cent, 2 cents, 5 cents, and 20 cents. Then the solution is 13 cents; since any smaller value can be obtained with at most three stamps (e.g. 4 = 2 + 2, 8 = 5 + 2 + 1, etc.), but to get 13 cents one must use at least four stamps.

  8. Mint stamp - Wikipedia

    en.wikipedia.org/wiki/Mint_stamp

    A mint high value 100 Rupee key type stamp of Ceylon valid for postage or revenue use and vulnerable to tampering to remove a fiscal cancel to make it appear to be a more valuable unused stamp. In philately, a mint stamp is one which is unused, has never been mounted and has the original gum, (if issued with gum).

  9. Dag Hammarskjöld invert - Wikipedia

    en.wikipedia.org/wiki/Dag_Hammarskjöld_invert

    The catalogue value of the invert is worth little more than the normal. The stamp, printed on Giori press in plates of 200, was designed by Herbert Sanborn and engraved by C. A. Brooks. 121,440,000 normal stamps were printed and 40,270,000 of the inverted reprint were produced. [3] Normal stamp

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