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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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1st overlay attempts

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  • Ronald Ozimek
    • Oct 2020
    • 416
    #1

    1st overlay attempts

    Thanks to Mint Error's instructions I'm making my 1st attempts at using the Paint.net overlay to decide if this coin matches a 1942-D Jefferson RPM 003. I'm using the 2 attached photos for the overlays & ask for your thoughts on evaluating the results. I can convince myself that the position of the mint mark to the building is good horizontally & vertically. I also think the part of the mint mark from the verticle bar of the "D" westward also looks reasonable. As I slide the software transparency bar, the bottom east end of my coins mint mark differs slightly from the target coin. My question- Is this possible normal variation in the the mint mark or die stage or proof that my coin does not match the target coin? Thanks for dragging me along through the educational process
    1942D rpm3 target.jpg 1942D rpm3.jpg
    Tags: None
  • eaxtellcoin
    RPM Dealer Specialist
    • Feb 2008
    • 852
    #2
    Afternoon Ron,
    I have copies of both of these RPM's. The planchet above is localized MD I believe, Notice it's flat to the surface on the left - yellow arrow - then it slides or pushes to the right/or towards the rim? white arrows.

    1942D_Coneca.jpg

    RPM003 is raised to the West - what you can see shows to the south so it's slightly rotated - top is right under secondary mintmark, the bottom is slightly rotated CCW.

    1942-D-RPM#3-UNC+5STP-M.jpg

    Hope this helps
    Eric

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    • Ronald Ozimek
      • Oct 2020
      • 416
      #3
      Thanks. Performing the computer steps to make the overlay is the 1st step. I will continue to work on analyzing the results

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