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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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2015 Penny

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  • 2015 Penny

    What would be the correct term to describe this error on this 2015 penny? After researching I believe it could be an I n collar double strike - maybe ?? Thank you
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  • #2
    This is definitely not a double strike. Those would leave additional images of the devices. This appears to be die deterioration.
    Bob Piazza
    Lincoln Cent Attributer

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    • #3
      Thank you for answering my question Bob. To follow up however, would it still be considered die deterioration if it raised kind of like a brockage error? You can feel the lines and curve.

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      • #4
        Yes. The deterioration leaves what they call a ridge line. This is actually very common on cents. A brockage would leave a reverse mirror image impression of another coin on the surface.
        Bob Piazza
        Lincoln Cent Attributer

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        • #5
          Thank you sir

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