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1971 Half Dollar Wrong or thin planchet?

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  • #1

    1971 Half Dollar Wrong or thin planchet?

    I promise last one tonight. I found this one searching rolls some years ago. The weight is 11.0 grams. Red Book says it should be 11.34 grams. The rim does not appear to have a copper core. However, there are two rim dings. In the one I have pictured there appears to be copper, while the other does not. This is a head scratcher for me. Thoughts?
    Robert



    S20220214_0009.jpg S20220214_0010.jpg S20220214_0011.jpg S20220214_0015.jpg
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  • #2
    Looks like environmental damage (PMD) to me. Lack of copper core could be from someone plating the coin.

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    • #3
      I think SumD is right on about the playing. The obverse looks washed out, the hair lines in the photo looks almost non-existent.

      It looks like the coin has all the details, so it's probably the right size planchet. All one has to do is ensure the reeding is good all the way around the coin.

      I agree, the weight is moderately under and it may well be an underweight planchet

      I don't have a good reference for "struck on wrong thickness stock". What I mean by that is:

      What would the weight of a Kennedy Half be if the Kennedy half dollars were correctly punched out (size wise) from Nickel, dime, quarter and dollar stock?

      That would be a great chart to have for all the US Minted coins and possible "struck on wrong thickness planchet" that occurred in the 1970-ish time frame.

      I am a bit under the weather so my back needs some time to recoup. If I can find enough data I will build a chart post-haste.
      Last edited by MintErrors; 02-15-2022, 10:17 AM.
      Gary Kozera
      Website: https://MintErrors.org

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      • #4
        thank you for your response. To me the reeding looks normal (except where the 2 dings are). The complete obverse looks washed out and details are not there. The reverse, on the other hand does have details and does not look washed out. I think I need to hang on to this one for now. The errors are definitely not my strong point. Varieties are more my thing, but still love the errors. Thanks again and hope you feel well soon.
        Robert

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        • #5
          One thing to consider is that this coin could have been face down in something for a while, its just difficult to know that it was. As some one else stated, it could be effects from the environmental side. If coins could tell us their journey, life might be a bit easier in respect to attribution.

          Ok, I managed to sit for a while and I added a post on my website that is related to struck on wrong thickness stock. Take a look at the post and come on back here and feel free to leave a reply.

          https://minterrors.org/struck-on-wrong-thickness-stock/

          I will eventually do the math for all of the possible combinations, but I am getting ready for a coin show, so that currently has a higher priority. Hope the information helps and you don't mind doing some easy math.
          Last edited by MintErrors; 02-16-2022, 07:17 AM.
          Gary Kozera
          Website: https://MintErrors.org

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          • #6
            WOW, I have never been to your site and you have a wealth of information. I will have to sit down and really examine this on my next day off. Thank you for the information and you don't have to do the work as I need to learn it for myself. But I do appreciate the offer. I also have your site in my favorites now and will explore more later.
            Thank you Robert

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