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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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1998 GB Two Pounds with Doubling.

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  • 1998 GB Two Pounds with Doubling.

    There is doubling evident evenly around the complete head of Queen Elizabeth II with the exception of the tip of the nose and the front section of the tiara. There are no step-edged or angular appearances to any section of this doubling. The Doubling appears to be extra metal with a smooth rolled flowing look. I do not believe this is Machine Doubling, but need to rule out Die-Deterioration. It however does seem too defined and tidy for the typical worn appearance of die-deterioration. All opinions would be gratefully appreciated.
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  • #2
    Judging from your description and your less-than-ideal photos, this is probably die deterioration related to a breakdown of chrome plating on the die face. This can produce a deceptively clear outline of the adjacent feature.
    Mike Diamond. Error coin writer and researcher.

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