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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.

CONECA was formed through a merger of CONE and NECA in early 1983. To learn more about the fascinating HISTORY OF THE ERROR HOBBY and THE HISTORY OF CONECA, we encourage you to visit us our main site Here

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We thank everybody who has helped make CONECA the great success that it is today!

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  • #1

    Greetings!

    Hello All and thanks for letting me join. I’m fairly new to the coin collecting world, but have fallen deep into the rabbit hole quite quickly!!! I’m not currently a paying CONECA member as I thought it would be a good idea to try this out to see how it goes. I’m a little geared towards variety coins. Started off with lincoln pennies and moving onto Indian Head pennies, etc.. !! Here’s a couple pics of an interesting 1990 that has something going on with the ear . Hope to get some great feedback from the experts here.
    -Shannon
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  • #2
    First of all, welcome aboard.

    There are select years that had the doubled ear, and I am pretty sure the 1990 Lincon from Philadelphia was not one of them.

    With these newer microscope devices out there, there have been many people using it to their fullest, and taking amazing photos. The problem is, the magnification can be too high. This can make things seem significant when they can be minor.

    Attributors who document the varieties typically do so at or near 10x power of magnification. That's an old school way of ensuring the variety is not too minor. When an attributor documents a coin, they take photos of where the issue existed for that die. There are a few websites you can check to see if there is a listing for a doubled ear.

    Https://conecaonline.info
    Http://varietyvista.com
    Https://doubleddie.com
    Https://coppercoins.com

    I did look at varietyvista, and the only one 1990 listed did not have an issue with the doubled ear.
    http://varietyvista.com/01b%20LC%20D...%20listing.htm

    I like to check the top 2 sites listed above to see if there are any documented examples out there. Then if there is, try to match the coin in hand to the example online.

    Lastly, but important, the varieties are part of the coin. Prior to 1996, The coin impression was sunk into a steel working die. It's the die with the issue, so with it being steel, these areas of doubling will not move locations.

    I think this is what they call isolated machine doubling. During the strike or, as the coin is being ejected from thedies/minting press, it simply takes a minute amount of damage in some areas.

    Happy hunting.
    Gary Kozera
    Website: https://MintErrors.org
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    • #3
      Hey Gary, thanks for your input. I really appreciate it. That all makes sense to me! I’m sure I’ll post a few more that I have and get your input on those as well!!
      -Shannon

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