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

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CONECA Table Announcement - PAN Coin Show - October 16-18, 2025

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  • Zimmy
    CONECA Treasurer/PA Rep
    • Aug 2007
    • 336

    CONECA Table Announcement - PAN Coin Show - October 16-18, 2025

    Just around the corner is the 2025 Fall PAN Coin Show in Monroeville, PA in which CONECA will once again have a table. Anyone reading this who is experienced in varieties is welcome to join us at the table since that is an area that we need expertise. Please contact me at jzimmerman0610@comcast.net to make table arrangements. We are looking forward to seeing you at one of the largest shows in the country. Bring in your errors and/or varieties to show us or have questions answered. A nice group of errors will be on display. See you soon!!!!!
    James Zimmerman
    Coneca N-911
    CONECA PA State Rep/Treasurer
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