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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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2009 William Harrison

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  • 2009 William Harrison

    I think this is a struck-thru, wondering if this is a Struck-Thru or Clogged Die if there is a difference. Thank you.
    Edward
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  • #2
    "Struck-thru" is a non-specific term. This coin was struck through "grease". Other coins are struck through metallic debris, plastic, die caps, etc.
    Mike Diamond. Error coin writer and researcher.

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