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50 Years of RotographicCoinpublications.com A Rotographic Imprint. Price guide reference book publishers since 1959. Lots of books on coins, banknotes and medals. Please visit and like Coin Publications on Facebook for offers and updates.

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predecimal.comPredecimal.com. One of the most popular websites on British pre-decimal coins, with hundreds of coins for sale, advice for beginners and interesting information.

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  1. blakeyboy

    blakeyboy

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    InforaPenny

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Popular Content

Showing content with the highest reputation on 05/10/2021 in all areas

  1. 2 points
    blakeyboy
    Damn! I like enigmatic mysteries!!!!
  2. 1 point
    InforaPenny
    This phenomena begins with a circular ring of rust at the surface of a steel die formed due to corrosion at the edge of a tiny circular water droplet on the die. As this progresses it results in a circular ‘dot’ of rust on the surface of the die, which is pulverized and lost as the die is used in the coining press leaving a round pit. This shows up on the coin as a circular raised dot. The process has been documented in an article by Paul M. Holland in the Journal of the Numismatic Association of Australia, volume 27, 2016, pages 1-6.
  3. 1 point





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