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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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2008 P

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  • 2008 P

    I found this while looking at the new Monroe coins. How could this happen along the edge?

    Linda
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  • #2
    It's not an error. It's a contact mark from the edge of another coin. It happens when coins get jostled together.
    Mike Diamond. Error coin writer and researcher.

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    • #3
      Mike, I think he was talking about the dropped b or p on the edge, not the rim dings. : )
      Proud Member: CONECA, TEC, HVNS, NS, ANA

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      • #4
        That is exactly what I'm referring to. The raised letter is a contact mark. For some reason, folks have been referring to these contact marks as "dropped letters", but this incorrect. As far as I know, not a single bona fide dropped letter has been identified on a Presidential dollar. And the edge is just about the last place you'd expect to find one.
        Mike Diamond. Error coin writer and researcher.

        Comment


        • #5
          I agree with the diagnoses as I have seen hundreds of them myself. This particular coin you can see the gash from the other coin directly above the embossed letter. I just can't understand how we do not see letters all over the place on these coins. There has to be a tremendous amount of force to do this. Why just one letter here and there? I have to wonder how much pressure it would take to leave that mark on the edge of a coin from another coin. Off to the bank to pick up a few rolls to see if I can figure it out. Have a good weekend Mike.

          Jim
          Proud Member: CONECA, TEC, HVNS, NS, ANA

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          • #6
            OK, I have tried to duplicate this on a Monroe. I was not able to get something that resembled the above. It did do alot of damage to the coins however. I even took two, placed them edge to edge and hit it HARD with a hammer, hard enough to do damage to the spot that I hit, it did not transfer the letter.

            Somebody is going to have to convince me of this diagnoses after me trying the things that I have. A coin simply hitting another coin in a bag I do not believe could cause this.
            Proud Member: CONECA, TEC, HVNS, NS, ANA

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            • #7
              Despite the failure of your experiment to duplicate the effect seen on the edge of the coin, it still must be a contact mark. There is no other conceivable explanation. Perhaps the two coins were mashed together in mint machinery or a counting machine. There's no way to know. I do applaud your experimental efforts.
              Mike Diamond. Error coin writer and researcher.

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