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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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Is this machine doubling?

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  • #1

    Is this machine doubling?

    Can across this 1964 Lincoln and noticed the "B" looked strange.
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    This gallery has 2 photos.
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  • #2
    In my opinion, yes, it looks like a combination of wear, damage and worthless doubling, maybe die deterioration.

    It is not a steadfast rule, but typically there would need to be a few letters, numbers or other design elements to be doubled in order for it to be called a doubled die.

    One thing to remember is that it is the working dies that have multiple impressions on them. They are made of steel and where the doubling shows up on the research sites, it is where it should appear on coins. Those areas don not move.

    The website https://conecaonline.info is starting to take shape. It can be checked for doubled dies.

    Another great resource and ease of use is http://varietyvista.com
    Gary Kozera
    Website: https://MintErrors.org

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    • #3
      Thanks. What I didn't notice until I posted the picture was the 'L", it looks to have even more "doubling" than the 'B'.

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      • #4
        The working dies don't have a rim.
        That is made on a blank planchet through use of an upsetting mill.
        So when they strike a coin some time the metal can flow towards the rim of a coin, especially if the working die has a lot of wear from use.
        In this case, it is probably die deterioration
        Gary Kozera
        Website: https://MintErrors.org

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