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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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2021-D crossing quarter

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  • Midwest Dozer
    • Feb 2024
    • 20
    #1

    2021-D crossing quarter

    i started seeing this in some coins so i put it on my camera and it looks like its triple and quad doubling or a lot of machine doubling. but i thought that all stopped when it went to single squeeze press. its really noticeable on the back of the boat but then it works up to the front man
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  • MintErrors
    Minterrors.org
    • Jun 2015
    • 3554
    #2
    The single squeeze refers to the making of the working die.

    The machine doubling or worthless doubling happens when those working dies are added to a minting press and coins are produced.

    If the press is slightly off, worthless doubling can be evident.

    I tried to zoom into the photo with my tablet to have a look, but it does get fuzzy. If the areas of concern are step like, looks damaged or areascare sheared off, especially near the base of the coin, it may be worthless doubling.
    Gary Kozera
    Website: https://MintErrors.org

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    • Midwest Dozer
      • Feb 2024
      • 20
      #3
      ill put a better picture up this is all happing in the center of the coin . so that is what is leading me to believe there is something there

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      • Midwest Dozer
        • Feb 2024
        • 20
        #4
        157B2.jpg

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        • Midwest Dozer
          • Feb 2024
          • 20
          #5
          i tried to zoom it as big as i can without distorting the picture i can see this with a 5 loop easy

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