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1993 D Planchet error?

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  • 1993 D Planchet error?

    I received this dime as pocket change awhile ago. I threw it in a 2X2 and thought it was attributed to someone practicing welding on a coin but after further review I don't know what caused it. Both obverse (big circle) and reverse are protruding away from the coin but have the correct die markings. It appears there is annealing on the obverse (small circles).
    Any help would be appreciated!
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  • #2
    It appears to be environmental damage (probably corrosion) between the clad layers. This is not something you see often on clad coins. Maybe someone else has another opinion on it?
    Bob Piazza
    Lincoln Cent Attributer


    • #3
      It looks like fire damage or someone left it on the burner just a bit too long.


      • #4
        Although I am not a metallurgist it would seem that when the silver clad layer melted it would not retain the die impression of the eye or leaf?


        • #5
          No silver in clad dimes. Copper and nickel. The silver plating is a nickel alloy. Copper melts at around 1900F while the nickel alloy melts at 2100-2500F (depending on purity of course).
          I could be way off base but it looks like it's been hot to me.


          • #6
            I would think that if the nickel cladding had melted post mint damage that it wouldn't have carried the die markings with it!?


            • #7
              this coin falls into the damaged camp - debating how and why is pointless as it cannot be proven.
              Jason Cuvelier

              Lead attributer