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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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1987 LMC What is this called? Groove below bust continues.

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  • #1

    1987 LMC What is this called? Groove below bust continues.

    Can anyone tell me if this has a name and what caused it? The groove under the bust continues along the edge to about 2.5k on the right and lighter to about 9k on the left.
    1_opt.jpg2_opt.jpg3_opt.jpgPA111545_opt.jpgPA111546_opt.jpg
    Tags: None
  • #2
    It looks like a crack in the copper plating.
    Mike Diamond. Error coin writer and researcher.

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    • #3
      Thank you. My first reaction was that my photo was poor and you were not seeing what I see. I took another at an angle (below). It looked as if the entire area between this crack and the rim was significantly lower than the field around the date. I could not get that to show in this photo either and, upon reexamination, I realized that it was an optical illusion I was seeing. So thank you - yes it is split plating!
      5.jpg

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      • #4
        It appears like the coin has seen some environmental damage (perhaps acidic in nature) and the plating split after being weakened.
        Ken Potter
        CONECA Public Relations
        Member of: CONECA-HLM, ANA-LM, MSNS-HLM, NWDCC, CSNS, NLG, IASAC, Fly-In
        Visit my website: http://koinpro.tripod.com
        Visit CONECA's Website
        Unless otherwise noted, images are by Ken Potter and copyright Ken Potter 2015.

        CONECA Notice: Any individual is encouraged to submit articles, opinions, or any other material beneficial to the numismatic community. Contributions should not be libelous or slanderous; ethics and good taste shall be adhered to. Opinions expressed herein do not necessarily represent the official CONECA policy or those of its officers. The act of submitting material shall constitute an expressed warranty by the contributor that the material is original; if not, source and permission must be provided.

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