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 Replies: 8 / Views: 1,555 |
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Pillar of the Community
Canada
9160 Posts |
I just got lucky and found 5 Rev 003 Type 2 but 4 of the 5 have this damage and I don't know the right name for it. This one is the wurst, What is the correct name?    |
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Bedrock of the Community
Canada
21606 Posts |
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Pillar of the Community
Canada
851 Posts |
Could be toning. Could be carbon black spots.
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Moderator
 Canada
10458 Posts |
That is what we call "nickel cancer". Basically, it is corrosion of the surface, and the green is a nickel-oxide product of the reaction.
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Pillar of the Community
 Canada
9160 Posts |
Nickel Cancer thats the last thing I would have thought of. Yes there was more green them all of them so I put a drop of Verdi-Care on it to soften it up then a tooth pick before I thought of a pic.
So this isn't some thing that happen to the metal before being minted like lamination problem?
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Moderator
Canada
10458 Posts |
Definitely post mint. If you remove the green crust you'll see a pitted crater underneath, where the original nickel surface was eaten away.
"Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Pillar of the Community
Canada
9160 Posts |
Yep that's what it is then, thanks SPP.
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Moderator
Canada
10458 Posts |
A more extreme example, with the nickel oxide crystals growing on the coin. In this state, it is NiO, or Nickel (II) Oxide. I've removed some from the top, so you can see how it corroded the nickel coin surface.  "Discovery follows discovery, each both raising and answering questions, each ending a long search, and each providing the new instruments for a new search." -- J. Robert OppenheimerContent of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_USMy eBay store
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Pillar of the Community
Canada
9160 Posts |
Yes that is what I had on mine but not that bad, thanks for the info.
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Replies: 8 / Views: 1,555 |
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Posted 01/13/2020 12:30 pm
