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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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1994 RPM Cent

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  • #1

    1994 RPM Cent

    I checked coppercoins web site and the listing of the top 100 RPM and the Coneca variety listing of RPMs and didn't find anything about a 1994 RPM. Take a look at this coin, is it a RPM?

    Thanks

    Tuebits
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  • #2
    Hi Tuebits,

    This looks to be a plating problem not an RPM. Gas under the copper plating is bursting out.

    Happy Hunting,
    Lestrrr

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    • #3
      It is impossible to have a RPM after 1989. The MINT applied the mint mark to the master die, so every mint mark is the same for that year.

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

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      • #4
        Presure test results

        Okay, as it was explained to me, if I press on a bubble it would move or change shape, Correct or incorrect? I took a plastic dental pick, you know the type that holds the floss on one end and a pick at the other and pressed around and sure enough it floats around.

        Tuebits

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        • #5
          You are correct Tuebits. Your test for checking if it is a gas bubble or not works just fine. These coins (post 1989) that had the mintmarks added to the hub can only be a doubled die if in fact it is doubled. The RPM will never happen again unless they resume hand punching the mintmark to the dies. This coin as noted had a plating problem that exposed the zinc core. Zinc will corrode over time when exposed to air. Yours is a great example of that.
          Bob Piazza
          Lincoln Cent Attributer

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