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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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1958-D RPM ?

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  • Baxter4545
    • Sep 2023
    • 24
    #1

    1958-D RPM ?

    Have a couple 1958-D with what looks like a RPM. Can anyone confirm if they think this is correct.Thanks
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  • MintErrors
    Minterrors.org
    • Jun 2015
    • 3554
    #2
    Do the serifs or points of the D have splits ?

    In my opinion, If you are concentrating on the area south or just below the mintmark, that sort of look is around the base of the 9 and 5 of the date. More than likely that is not a RPM.

    Good websites to use for RPMs and doubled dies to find a match are:
    Home - CONECA Master List
    Https://conecaonline.info
    NEW Variety LISTINGS LincolnWheat Cents LincolnMemorial Cents Buffalo Nickels Jefferson Nickels Mercury Dimes Roosevelt Dimes Standing Liberty Quarters WashingtonQuarters State QuartersDC & Territories America the Beautiful Quarters LibertyHalf Dollars FranklinHalf Dollars KennedyHalf Dollars EisenhowerDollars Susan B. Anthony Dollars SacajaweaDollars PresidentialDollars Bullion Commemoratives Mint Medals Coppers &Flying Eagles Indian Cents Half Dime Shield Nickels Liberty HeadNickels

    Wexler's Coins and Die Varieties
    Https://doubleddie.com
    Die varieties such as doubled dies, Repunched mint marks (RPMs), Over Mint Marks (OMMs), Repunched Dates, Overdates, coin design varieties, as well as regular coins and error coins.

    A Comprehensive Web Encyclopedia of U.S. Copper Coinage
    Https://coppercoins.com

    Variety Vista Home
    Http://varietyvista.com
    Gary Kozera
    Website: https://MintErrors.org

    Comment

    • Baxter4545
      • Sep 2023
      • 24
      #3
      The serifs on both the top and bottom have splits in the serif. I'll try to get a better pic.

      Comment

      • Ray Parkhurst
        • Aug 2007
        • 192
        #4
        A lot of different things can happen on the surface of the die when the MM is punched into it. This sort of "ghost" MM is common in this period, and can mimic an RPM. Take a look at it from different angles to see what is happening. Is the area in question raised or incuse? Does it have the exact shape of that part of a MM punch?

        Comment

        • MintErrors
          Minterrors.org
          • Jun 2015
          • 3554
          #5
          Originally posted by Baxter4545 View Post
          The serifs on both the top and bottom have splits in the serif. I'll try to get a better pic.
          It just needs lighting on the split serifs. CONECA might consider just split serifs a minor RPM. As these RPMs become less available, CONECA might list them, if they haven't already.

          Http://coppercoins.com might be the best place to find a match. It is imperative to realize where the mintmark is positioned on the coin. Before 1989, the mint marks were hammered into each working die. That meant there are subtle differences in location for each mintmark, but matches can be had. That lead to some human errors and RPMs were born. RPMs were eliminated in the early 1990s when the US Mint decided to add the mint mark to the design of the coin.

          The attributors who have documented all the currently have found will offer direct, head on photos of the year and mintmark. This helps other attributors and collectors to identify which RPM they might have. Some may go as far as creating an overlay which cements the attribution if the position of the mint mark is right on.
          Last edited by MintErrors; 02-22-2024, 08:55 PM.
          Gary Kozera
          Website: https://MintErrors.org

          Comment

          • Baxter4545
            • Sep 2023
            • 24
            #6
            Thanks for the info. I will check out coppercoins. Haven't been there yet. Here are a coupleof new pics
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            • Baxter4545
              • Sep 2023
              • 24
              #7
              Thanks Gary. Went to coppercoins. Found this particular RPM Good site.

              Comment

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