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CONECA (pronounced: CŌ´NECA) is a national numismatic organization devoted to the education of error and variety coin collectors. CONECA focuses on many error and variety specialties, including doubled dies, Repunched mintmarks, multiple errors, clips, double strikes, off-metals and off-centers—just to name a few. In addition to its website, CONECA publishes an educational journal, The Errorscope, which is printed and mailed to members bimonthly. CONECA offers a lending library, examination, listing and attribution services; it holds annual meetings at major conventions (referred to as Errorama) around the country.

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Strike Throughs

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  • #1

    Strike Throughs

    Hi everyone,

    I have 4 pictures of pennies that I think are strike throughs. The first one has two on the shoulder, the second is on the jaw, the third is three areas on his face and the fourth is on and under the chin. I would appreciate your input on these.

    Thanks
    Hankster
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  • #2
    It is very hard to determine if these coins are affected with strike throughs or not. Generally a microsopic examination is needed to validate whether there was on object on the planchet when it was struck or if it is a case of post mint damage.

    BJ Neff
    Member of: ANA, CCC, CONECA, Fly-in-club, FUN, NLG & T.E.V.E.C.

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    • #3
      The third Lincoln cent really looks like post-strike damage. I'm unsure about the other three. As BJ said, a close-up examination is necessary.
      Mike Diamond. Error coin writer and researcher.

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      • #4
        Possible strike through

        I would love to send these to someone that would confirm if it is a strike through or not. The only way I will learn how to determine this for myself, is if someone shows me what to look for. I have not found any publications that show this kind of detail in both extreme close-up pictures and very descriptive text.

        Thank you BJ and Mike for responding so quickly.

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        • #5
          On a microscopic level, look to see if any metal is pushed up along the margin of the depression. Also look for swelling of surrounding metal. If both are absent, then you probably have a genuine strike-through.
          Mike Diamond. Error coin writer and researcher.

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          • #6
            Identification of Strike Through

            That is awsome information Mike. Just what kind of magnification are we talking about to see this and what kind of equipment would provide it?

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            • #7
              You'll need a stereozoom microscope. 20x - 30x magnification should do it.
              Mike Diamond. Error coin writer and researcher.

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