What causes this type of "bubbling" on a penny?

Discussion in 'Error Coins' started by Noahqto, Feb 9, 2018.

  1. Noahqto

    Noahqto Member

    I found this penny in change awhile back. I have no idea what causes something like this and it gets even stranger under a microscope.. Any ideas? (Also I know there isnt any value in this coin, just interested :))
    error-penny-obverse.jpg
    error-penny-reverse.jpg
    These are the pics from a microscope on the "bubbled areas"
    error-penny-closeup.jpg
    error-penny-closeup2.jpg
     
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  3. desertgem

    desertgem Senior Errer Collecktor Supporter

    The copper is electroplated over the zinc core, and if not a clean interface, separation can occur, especially under the pressure of the dies, so bubbles of different sizes, shapes, and quantity is a common feature of these.Jim
     
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  4. Noahqto

    Noahqto Member

    Thanks for the information! Very interesting stuff.
     
  5. cpm9ball

    cpm9ball CANNOT RE-MEMBER

    It is just one of the reasons why I call them "crappy Zincolns".

    Chris
     
  6. desertgem

    desertgem Senior Errer Collecktor Supporter

    Many of the Greybeards like myself and Chris tend to limit ourselves to earlier cents, although I did run into some boxes of 2009 series errors that I couldn't refuse. The younger generation seems to like the later stuff, but all are welcome to collect whatever they wish and can afford to obtain. Jim
     
  7. Noahqto

    Noahqto Member

    I personally can't stand zincolns... especially the shield backs :vomit: The main series i collect are pre 64 Washingtons due tue the relative affordability.. if I had a bigger budget i'd try for a nice set of morgans tho :)
     
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