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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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  • Ra6907
    started a topic Strike through

    Strike through

    Recently I discovered a 1959-D cent with an unusual error. The Obverse appears to have remnants of a memorial reverse in it. Much stronger than a “Prison...
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  • tx.paulm
    started a topic clash die proof quarter info

    clash die proof quarter info

    Hello all,

    I am new to this forum (but I was a member of CONECA years ago in the days before cells phones and the web). I am seeking information...
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