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PVC damage ???

ibzman350ibzman350 Posts: 5,315 ✭
in U.S. Coin Forum
the green stuff is that what it looks like


Herb
Remember it's not how you pick your nose that matters, it's where you put the boogers.
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Comments

  • StuartStuart Posts: 9,761 ✭✭✭✭✭
    Yes, that's it.

    Stuart

    Collect 18th & 19th Century US Type Coins, Silver Dollars, $20 Gold Double Eagles and World Crowns & Talers with High Eye Appeal

    "Luck is what happens when Preparation meets Opportunity"
  • harbonharbon Posts: 59
    There was a guide to detecting PVC damage in this thread.
  • K6AZK6AZ Posts: 9,295 ✭
    That's PVC, and has progressed well beyond any hope. Removed, you will find pits underneath.
  • Catch22Catch22 Posts: 1,086 ✭✭
    Looks like the coin is already slabbed?


    When we are planning for posterity, we ought to remember that virtue is not hereditary.

    Thomas Paine
  • ibzman350ibzman350 Posts: 5,315 ✭
    and here is the rest of the story



    Herb
    Remember it's not how you pick your nose that matters, it's where you put the boogers.
    imageimageimage
  • K6AZK6AZ Posts: 9,295 ✭
    Well it's a sample slab, and there is no guarantee on coins in sample slabs.
  • SpinynormanSpinynorman Posts: 603 ✭✭
    Here's an example from a couple Harco albums of Canadian 25 and 50 cents that I got recently. I was surprised that it came off almost instantly on all of the coins. I think it may have had something to do with the PVC portion of the album not being in direct contact with the coins, but migrating through the open top of the inner mylar sleeves. There was no damage to the surfaces, even on the PL and Specimen coins.

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  • XpipedreamRXpipedreamR Posts: 8,059 ✭✭
    So if you see any green on a coin, is it necessarily PVC related? What are the other possibilities if any?



    PS: I'm not talking about green toning, BTW
  • XpipedreamRXpipedreamR Posts: 8,059 ✭✭
    For example, I'm guessing this isn't PVC...


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  • SpinynormanSpinynorman Posts: 603 ✭✭


    << <i>So if you see any green on a coin, is it necessarily PVC related? What are the other possibilities if any? >>



    Corrosion on copper, brass, bronze coins, paint, flourescent green highlighters... image
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  • XpipedreamRXpipedreamR Posts: 8,059 ✭✭
    How about nickel or silver coins?



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  • 291fifth291fifth Posts: 24,343 ✭✭✭✭✭
    I agree, it looks like PVC residue.
    All glory is fleeting.
  • SpinynormanSpinynorman Posts: 603 ✭✭
    I think you can get verdigris on CN and silver coins, but I can't recall any that I've seen.
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  • 291fifth291fifth Posts: 24,343 ✭✭✭✭✭


    << <i>So if you see any green on a coin, is it necessarily PVC related? What are the other possibilities if any?



    PS: I'm not talking about green toning, BTW >>



    Bronze coins that have been stored in leather purses for a VERY long time will sometimes develop a waxy green crud on their surface. This is usually mistaken for corrosion. This waxy green crud can be easily removed by soaking the coin in a solution of ammonia and hot water. After the coin has been in the solution for about five minutes remove it and lightly brush the coin with an old toothbrush. The crud should come off easily. The original patina of the coin remains. Usually the part of the coin that was covered by the waxy green crud will take on a blue coloration that is quite pleasing.
    All glory is fleeting.
  • XpipedreamRXpipedreamR Posts: 8,059 ✭✭
    Anyone else for green crud on nickel or silver?

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