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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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  • #1

    ODD

    Yesterday I was searching a bank quarter roll and found 8 1776-1976 quarters in excellent shape. I weighed each one and oddly enough, 5 were within the 5.67 grams for clad quarters and three weighed 5.74, 5.76, and 5.77 grams respectively. However, this weight would indicate silver clad coins. I did re-calibrate the scale for a second reading that resulted in the same weights.

    As I understand it, the silver clad coins were all made in San Francisco, yet these coins do not have an "S" mintmark. Before I get too excited about an error, I need to undertand how a coin presumably minted in Philadelphia could be silver, and/or a silver coin made in San Francisco does not have a mintmark. What is the best way to confirm or eliminate a wrong planchet or missing mintmark.

    What is the percentage of silver in these Bi-Centenial silver clad quarters. Seems to me it is well below 40%.
    Attached Files
    Last edited by Merlin8971; 08-01-2015, 02:58 PM.
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  • #2
    Take some images of the rim, if their silver, they shouldn't be 2 toned ..
    Last edited by Stachowski; 08-01-2015, 05:11 PM.

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    • #3
      Here are photos of the edge from two sides. Looks a bit too coppery to me, but I am color blind.
      Attached Files

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      • #4
        Your quarters were undoubtedly struck on planchets punched out of Cu-Ni clad quarter stock that was rolled a bit too thick.
        Mike Diamond. Error coin writer and researcher.

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        • #5
          Guess I'll put them with the 1942 zinc plated penny (non-magnetic) I got today.

          Comment

          • #6
            Silver and Clad have two different distinctive looks even more so in photographs than in person. These scream out "Clad" especially after viewing the edges. I'd guess they are simply a bit overweight. BTW, some defective silver-clad planchets that were rejected for numismatic purposes were mistakenly redirected to Denver along with clad for use there and got struck in 1976 and 1977. Nothing went to Philly.
            Ken Potter
            CONECA Public Relations
            Member of: CONECA-HLM, ANA-LM, MSNS-HLM, NWDCC, CSNS, NLG, IASAC, Fly-In
            Visit my website: http://koinpro.tripod.com
            Visit CONECA's Website
            Unless otherwise noted, images are by Ken Potter and copyright Ken Potter 2015.

            CONECA Notice: Any individual is encouraged to submit articles, opinions, or any other material beneficial to the numismatic community. Contributions should not be libelous or slanderous; ethics and good taste shall be adhered to. Opinions expressed herein do not necessarily represent the official CONECA policy or those of its officers. The act of submitting material shall constitute an expressed warranty by the contributor that the material is original; if not, source and permission must be provided.

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            • #7
              Thank you for the info koinpro....it is quite helpful.

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              • #8
                You are welcome.
                Ken Potter
                CONECA Public Relations
                Member of: CONECA-HLM, ANA-LM, MSNS-HLM, NWDCC, CSNS, NLG, IASAC, Fly-In
                Visit my website: http://koinpro.tripod.com
                Visit CONECA's Website
                Unless otherwise noted, images are by Ken Potter and copyright Ken Potter 2015.

                CONECA Notice: Any individual is encouraged to submit articles, opinions, or any other material beneficial to the numismatic community. Contributions should not be libelous or slanderous; ethics and good taste shall be adhered to. Opinions expressed herein do not necessarily represent the official CONECA policy or those of its officers. The act of submitting material shall constitute an expressed warranty by the contributor that the material is original; if not, source and permission must be provided.

                Comment

                • #9
                  Ken your right about the pictures, the texture look of that coin screams clad.. Never really paid attention to that before. I always just take a clear (white) Kleenex, lay it over the coin, if its black its clad, if its white.. Bingo, its silver.
                  Proud Member: CONECA, TEC, HVNS, NS, ANA

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                  • #10
                    Jim, you're right about the tissue but it doesn't work on toned coins does it? Not sure. For the record, this was developed when dealers ran up the price of the 1973-S Brown Ikes to over $100 and shysters started prying the holders apart and switching the coins for the clad Ike. But I bet you already knew that!
                    Ken Potter
                    CONECA Public Relations
                    Member of: CONECA-HLM, ANA-LM, MSNS-HLM, NWDCC, CSNS, NLG, IASAC, Fly-In
                    Visit my website: http://koinpro.tripod.com
                    Visit CONECA's Website
                    Unless otherwise noted, images are by Ken Potter and copyright Ken Potter 2015.

                    CONECA Notice: Any individual is encouraged to submit articles, opinions, or any other material beneficial to the numismatic community. Contributions should not be libelous or slanderous; ethics and good taste shall be adhered to. Opinions expressed herein do not necessarily represent the official CONECA policy or those of its officers. The act of submitting material shall constitute an expressed warranty by the contributor that the material is original; if not, source and permission must be provided.

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                    • #11
                      Has anyone seen my brain? Anyone seen my brain? The tissue test was one of the first things I learned as a new collector. Duh! Has anyone seen my brain?

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                      • #12
                        Hey Merlin, it happens to all of us! LOL
                        Ken Potter
                        CONECA Public Relations
                        Member of: CONECA-HLM, ANA-LM, MSNS-HLM, NWDCC, CSNS, NLG, IASAC, Fly-In
                        Visit my website: http://koinpro.tripod.com
                        Visit CONECA's Website
                        Unless otherwise noted, images are by Ken Potter and copyright Ken Potter 2015.

                        CONECA Notice: Any individual is encouraged to submit articles, opinions, or any other material beneficial to the numismatic community. Contributions should not be libelous or slanderous; ethics and good taste shall be adhered to. Opinions expressed herein do not necessarily represent the official CONECA policy or those of its officers. The act of submitting material shall constitute an expressed warranty by the contributor that the material is original; if not, source and permission must be provided.

                        Comment

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