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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

If you're not a member and would like to join see our Membership Application

We thank everybody who has helped make CONECA the great success that it is today!

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New Coneca & Forum Member

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  • Errorologist
    • Dec 2025
    • 1

    New Coneca & Forum Member

    Hello from Central New York State!

    I am a new paid member to Coneca as a way to support this forum and the hobby. I enjoy searching for errors and undiscovered errors that may be of interest.

    I love sharing my finds with my grandchildren as I encourage them to collect and learn.

    I'm not really a professional Errorologist, I just play one with my grandchildren and they think I am!

    I'm here to learn and share, thanks!
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