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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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Large die break "CUD" on a 1989 cent

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  • #1

    Large die break "CUD" on a 1989 cent

    Found this one while looking through some circulated rolls of Lincoln cents.



    It is a fine line that seperates what is to brittle and what is not on a die. This one, even though it appears to be EMDS, had some fault to cause a piece of the die to be chipped out.

    BJ Neff
    Member of: ANA, CCC, CONECA, Fly-in-club, FUN, NLG & T.E.V.E.C.
    Tags: None
  • #2
    As you say, some dies fail early. It could be because of poor die steel, improper quenching, improper tempering, or some other misstep during die preparation.
    Mike Diamond. Error coin writer and researcher.

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