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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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State quarter errors

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  • Jamescancino1992
    • May 2024
    • 42

    State quarter errors

    Okay so I have all these Philadelphia state quarters with the same characteristics can someone explain?
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  • MintErrors
    Minterrors.org
    • Jun 2015
    • 3554

    #2
    In my opinion, this coin looks heavily pitted, as if they were in the ground or exposed to some sort of acid treatment in the past. The overall patina, or finish has been stripped off.

    If someone takes a tool, like screwdriver or punch and strikes the coin real hard with a 3 pound sledge, it will damage one side and place a bulge on the other. It also should have been on a road, somewhat on a pebble and some one ran it over. The scenarios can be many.

    Once coins go into circulation, its open season on the types of abuse they might go through. So if some suspects an error coin and it's been in circulation, one has to weigh in the possibility of post mint damage, or PMD. That means it was done after it left the US Mint.
    Gary Kozera
    Website: https://MintErrors.org

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    • Jamescancino1992
      • May 2024
      • 42

      #3
      Yeah but they all have the beaklsy effect i have more
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