Question..

Discussion in 'Coin Chat' started by HappyCoins, Jan 12, 2014.

  1. HappyCoins

    HappyCoins Active Member

    Good morning everybody,
    i Have a question about this kind of coins, why a lot of coins have this holes?

    3.jpg 1.jpg 2.jpg
     
    HappyCoins, Jan 12, 2014
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  3. kanga

    kanga 65 Year Collector

    In this particular case the circular nature of the marks/voids lead me to believe that the bond between the copper cladding and the zinc core was bad.
    This often leads to bubbles -- and bubbles break.

    Although drops of something caustic to copper could also be the culprit.
     
    kanga, Jan 12, 2014
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  4. GDJMSP

    GDJMSP Numismatist Moderator

    One term kind of covers all of the possibilities - post mint damage.
     
    GDJMSP, Jan 12, 2014
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  5. kanga

    kanga 65 Year Collector

    As usual the simplest answer is the best.
     
    kanga, Jan 12, 2014
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  6. Phil Ham

    Phil Ham Hamster

    It looks like someone was dropping acid on it.
     
    Phil Ham, Jan 12, 2014
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  7. TopcatCoin

    TopcatCoin TC

    I believe that this is commonly referred to as zinc rot. TC
     
    TopcatCoin, Jan 12, 2014
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