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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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1957-D Lincoln Cent RPM unlisted

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  • Paul Sasso
    • Feb 2023
    • 190

    1957-D Lincoln Cent RPM unlisted

    Hey everyone, I've extensively searched through the 3 major error and variety sites and I do not see anything that matches this. I don't expect anyone to look through the mass amounts of them but figured I post it anyway. It appears to be either a Rpm south yet there also appears ti be doubled serifs on the bottom left...not sure if that would make it a D/D/D south double serifs? Any thoughts on this would be much appreciated. Thank you
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  • Ray Parkhurst
    • Aug 2007
    • 192

    #2
    Looks a lot like RPM #1, but the MM is lower. Hard to tell if it's a triple, but for sure it looks like an RPM and may be something new. Problem is it's seen some circulation so it's tough to do an accurate attribution as the markers are no longer pristine.

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    • Paul Sasso
      • Feb 2023
      • 190

      #3
      Update, RPM-005/DDO-002

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