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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

    New Member

    My name is Megan. I’ve been an avid collector for about 7 years before that I collected with my folks as a child. I collect a wide variety of US currencies ranging from 1800s to recent. I don’t know much about all the errors or variations so I’m extremely excited to learn. Thanks in advance for all the helpful information that I’m going to learn.
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  • #2
    Welcome to the Forum Megan.

    What I can immediately offer are a few sites to visit as you wish.

    1. John Wexler's educational site about coins. https://doubleddie.com

    I will highlight just a few pages he has. One is about "worthless" doubling and it can be the hardest thing to master. John W offers a comarision between a worthless doubling and an actual doubled die. On the doubled dies, notice how the doubling appears to be thicker. It may also have a cookie cutter style line where the doubled die impression overlapped.

    Worthless doubling
    https://doubleddie.com/144801.html

    Actual doubled die listings
    https://doubleddie.com/228401.html

    Re-punched mint marks
    https://doubleddie.com/307764.html

    John Wexler does recognize CONECA listings and tries to coordinate his numbering system with CONECA. John does not list all of his findings. However, he has a wide selection of coin types with some pretty good examples.


    2. James Wiles attribution site http://varietyvista.com

    James W recently handed over the attribution duties back to CONECA. The variety vista site has a lot of examples to look through, categorized by coin type, then by variety (doubled die obverse, doubled die reverse or re-punched mint marks) and finally by year. It is a simple drill down system and once you are at the year, it lists most varieties that CONECA recognizes.

    3. Brian's variety coins https://www2.briansvarietycoins.com//.

    Brian offers attribution photos at the top menu bar under Nickel doubled die listings. He also has coins for sale to the left menu bar. Both areas offer some good coin photography to look over and potentially find a match.

    It looks like you have posting down pretty well.

    A suggestion I can offer is when you post a coin, make sure it is a single coin per post. Try to post varieties (DDO, DDR, RPM's) under the varieties forum and any potential error coins (off-center, lamination, strike-thru's, etc under the error forum.

    It is best to get the clearest photograph of the obverse of the coin and the reverse. Some like to get as close to the coin, and it often blurs the photograph, and the attributers or fellow error coin collectors cannot determine what you are seeing.

    Lighting is the #1 pain in my opinion. Too much light will set off glare and make it impossible to see. Too little and the photo is too dark to see the depth of the coin to make an educated guess what the coin is. If your having difficulties with lighting, simply drape a sheer white cloth around the coin or over a light. Take your photos and immediately remove the cloth from the light.

    I am sure CONECA staff member will stop by and offer greetings as well. Feel free to ask questions, some one should respond back usually within a day or two, some times sooner.

    If you have coin related questions, please ask. Many of the staff members here are always willing to answer questions, or point you to a reference that can explain that question.

    Welcome aboard. We hope you enjoy your experience here.
    Last edited by MintErrors; 12-20-2021, 09:35 AM.
    Gary Kozera
    Website: https://MintErrors.org

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    • #3
      Hi Megan. Welcome to the CONECA forum. MintErrors has posted a lot of great information to help you navigate your way through this hobby. I do want to add one more site to look at that specializes in varieties on the Lincoln cent It is coppercoins.com/

      https://coppercoins.com/

      Please ask questions and we will be happy to assist you. Once again, welcome to the forum.
      Bob Piazza
      Lincoln Cent Attributer

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      • #4
        Thank you both for the helpful info and links. I’ve already made use of a few. I do have a question that I’ve been wondering for some time now. Can a coin be doubled-die on both sides? I’ve never read anything online stating that is possible but I’ve found a few coins that looked as if they were.

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        • #5
          It is not unheard of. There are a few examples where there is genuine hub doubling on both sides of the coin.
          Bob Piazza
          Lincoln Cent Attributer

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