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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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1994P Washington quarter

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  • 1994P Washington quarter

    I see doubling in 3 spots on the wreath below the tail of this 1994 P quarter. Machine doubling or doubled die?
    I have been working on my ability to tell the difference and watched a great video someone suggested by the guy from Error Coin Collectors. I do notice when I find a machine doubled coin you typically find doubling in many places...
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  • #2
    Your coin shows machine doubling. The very nature of machine doubling means if can show up any place on the coin and with many areas or just 1 or 2 area of MD.
    Bob Piazza
    Lincoln Cent Attributer