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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.

CONECA was formed through a merger of CONE and NECA in early 1983. To learn more about the fascinating HISTORY OF THE ERROR HOBBY and THE HISTORY OF CONECA, we encourage you to visit us our main site Here

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Planchet error?

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  • Planchet error?

    Do you think this could be a planchet error (possibly the end of the stamped sheet)? Or the dreaded post mint damage...
    The coin is a 1935 Mercury dime
    1935 heads.png 1935 tails.png
    1935 edge.png

  • #2
    In my opinion, a well circulated coin with post mint damage. It may have been used as a screwdriver or other tool. If the rim looks shiny, it probably occurred recently.
    Gary Kozera
    Website: https://MintErrors.org

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