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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.

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2006-D penny.

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  • #1

    2006-D penny.

    Well, I just found this penny with one side looks like proof, and the other side is normal. Am I right? Your thoughts and opinions would be greatly appreciated.
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  • #2
    Strangely enough, I have found multiple 2007 and 2006 cents with a proof-like reverse. I think it probably because these coins are that ones that were struck earlier on in the use of the dies.

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    • #3
      I agree, but why only one side has a proof like and the other not

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      • #4
        I wouldn't call it proof like - the planchet is shiny, but the characteristics stop there and do not take on the qualities of a proof die. And it does seem like a mid 2000s Lincoln cent phenomena.
        Jason Cuvelier

        CONECA
        Lead attributer
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