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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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1939 Jefferson Nickel

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  • 1939 Jefferson Nickel

    Here are some interesting photos of a 1939 Jefferson that I came across.























    Helping collectors find Coin Shows since 2008

  • #2
    It's die deterioration doubling.
    Mike Diamond. Error coin writer and researcher.

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    • #3
      Helping collectors find Coin Shows since 2008

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      • #4
        Mikes statement is correct. It may also have some machine doubling with it. Some things to remember, one tell tale sign of deterioration is the orange peel effect in the fields. If you look at the E L of montecello picture the letters look "smeared", that is the effect of an old die and the flow of metal from the planchet washing the shape of the die away. Also, the "doubling lines you see are all pointing toward the center which shows that metal flow. True dd don't show the doubling around the whole letter usually it is on one side and the other doubling if any would all be on that same side. If that last sentence confused you I apologize, I'm not the best person to explain things.
        Jimmy Ehrhart
        previous member of CONECA and C.F.C.C.

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        • #5
          Hello, just need clarification...

          Are we seeing here notchings/separations? If so, are these then exceptions to the "rules" on how to ID a true DD? That clarification will help us novices/beginners avoid mis-identifying and avoiding spending time on these coins.


          Thank you...NVTEs

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          • #6
            To answer your first question: I hope not. This effect is the errosion of a die face due to age.
            Jimmy Ehrhart
            previous member of CONECA and C.F.C.C.

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            • #7
              Jimmy is 100% correct. This is all due to die deterioration doubling. The one aspect of this type doubling is that you CAN have notching, however, it is different than the true doubled die notching.

              BJ Neff
              Member of: ANA, CCC, CONECA, Fly-in-club, FUN, NLG & T.E.V.E.C.

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