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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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  • Ra6907
    started a topic 1942 10C DDO-???
    in Mint Error Forum

    1942 10C DDO-???

    I know that the accepted 1942/41 P looks different. I am just intrigued by this and am wondering if this is a known variety? Opinions?
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  • Ra6907
    started a topic 1942/41-D Mercury Dime
    in CONECA Announcements

    1942/41-D Mercury Dime

    The rarity of the Denver minted version is partly because of the difficulties in distinguishing the error coin by sight. Only under magnification does...
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    • 4 likes
  • macmercury
    started a topic Can't figure out the right RPM
    in Die Variety Forum

    Can't figure out the right RPM

    I posted this question in CCF yesterday and not received an response from other members, so hopefully someone here may have a similar 1942-D Mercury dime,...
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    Last edited by macmercury; 11-17-2012, 03:06 PM.
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