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2005 D Minnesota State Quarter Off Metal?

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  • #1

    2005 D Minnesota State Quarter Off Metal?

    My neighbor brought me the coin this morning. I don't know what to make of it. At first glance I thought a typical gold-plated coin. However, the color (as compared to other gold-plated coins I have) was not even close to those coins. In addition, every single gold-plated coin in my possession and every single one I've ever seen displays no evidence of the cartwheel effect. This coin has the cartwheel effect on both the obverse and reverse. I cannot detect (even with a microscope) any evidence of plating or any evidence that it is a typical clad quarter.

    It weighs 5.79 grams. Another state quarter I weighed comes in at 5.7 grams. So virtually identical. I couldn't get a clear picture of the reeding, but it appears identical to normal state quarter reeding. See two attached photos.

    Thoughts would be appreciated.


    Pete
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  • #2
    If it were a 1999 or a 2000 Statehood quarter, I would have a logical explanation.

    http://error-ref.com/state-quarters-...tal-alloy.html

    However, since it is of a later date it may take an explanation form Mike Diamond and even an in hand examination.

    BJ Neff
    Member of: ANA, CCC, CONECA, Fly-in-club, FUN, NLG & T.E.V.E.C.

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    • #3
      Since the weight is essentially normal, the default hypothesis must be that the coin is plated or oddly discolored. No full diameter, normal weight off-metal state quarters have been authenticated, to my knowledge.
      Mike Diamond. Error coin writer and researcher.

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      • #4
        this coin is probably naturally toned to a golden color. for some odd reason our newer coins will naturally tone to a deep golden or copper color . the circulated ones are not so bad to do this so I'm thinking it may be caused by something the mint is using to wash the planchets before striking them.
        I did a experiment by washing some of my new coins and they have stayed bright and none of the toning at all.

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