What causes rough pitted lines on a coin

Discussion in 'Error Coins' started by justyn p, Dec 15, 2021.

  1. justyn p

    justyn p Active Member

    Im not suggesting this is an error theres just a rough surface appearance, this 1937 GB penny is in pretty good condition overall for its age, in fact the detail is better than some other 1937 examples I have and the weights close to the correct weight. so my question is any ideas what has caused the surface irregularity please ?
    Iphone pics again ! apologies


    1937 GB penny lines on reverse.jpg 1937 GB penny lines on reverse1.jpg 1937 GB penny lines on reverse2.jpg 1937 GB penny lines on reverse3.jpg 1937 GB penny lines on reverse4.jpg 1937 GB penny lines on reverse5.jpg 1937 GB penny lines on reverse weight1.jpg
     
    justyn p, Dec 15, 2021
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  3. potty dollar 1878

    potty dollar 1878 Well-Known Member

    Corrosion,it does appear to have been underground for some time(environmental damage).
     
    potty dollar 1878, Dec 15, 2021
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  4. YankeeDime

    YankeeDime non-conformant

    CC_20210614_112116.png CC_20210614_112840.png

    One of mine looks pretty similar and I guess it's caused by to much time in the ground. :yack:
     
    YankeeDime, Dec 15, 2021
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  5. tommyc03

    tommyc03 Senior Member

    Maybe exposure to a fire? That blackness looks like soot.
     
    tommyc03, Dec 15, 2021
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  6. SensibleSal66

    SensibleSal66 U.S Casual Collector / Error Collector

    I agree a Metal Detecting find.[​IMG]
     
    SensibleSal66, Dec 15, 2021
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  7. Mountain Man

    Mountain Man Well-Known Member

    Staining or ED, environmental damage.
     
    Mountain Man, Dec 15, 2021
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