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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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Rim-restricted design doubling

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  • #1

    Rim-restricted design doubling

    This post relates to duplication of peripheral design elements in the southeast quadrant of the reverse face of Washington dollars. Extra elements are replicated on the internal margin and upper surface of the design rim. Sometimes they show a rotation relative to the normal elements. Sometimes they can take up the internal half of the rim. In one case more than one set is present. Quite a few die pairs are involved. BJ Neff alerted me to the phenomenon and I've got an article on it coming out in Errorscope.

    rim-restricted_doubling.jpg

    It could represent machine doubling, ejection impact doubling, ejection doubling (sensu stricto), or something else entirely. Ideas are welcome.
    Mike Diamond. Error coin writer and researcher.
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