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1974 Dollar Rev 003 Type 2 Name Of Damage

 
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 Posted 01/13/2020  11:04 am Show Profile   Bookmark this topic Add mcshilling to your friends list Get a Link to this Message
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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 Posted 01/13/2020  11:26 am  Show Profile   Bookmark this reply Add JimmyD to your friends list Get a Link to this Reply
Looks like Die Chips
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Canada
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 Posted 01/13/2020  12:30 pm  Show Profile   Check TheDeductible's eBay Listings Bookmark this reply Add TheDeductible to your friends list Get a Link to this Reply
Could be toning. Could be carbon black spots.

?
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Canada
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 Posted 01/13/2020  1:53 pm  Show Profile   Check SPP-Ottawa's eBay Listings Bookmark this reply Add SPP-Ottawa to your friends list Get a Link to this Reply
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.
"Research is what I am doing, when I don't know what I am doing" --Wernher von Braun

Content of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_US

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Canada
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 Posted 01/13/2020  2:37 pm  Show Profile   Bookmark this reply Add mcshilling to your friends list Get a Link to this Reply
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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 Posted 01/13/2020  7:01 pm  Show Profile   Check SPP-Ottawa's eBay Listings Bookmark this reply Add SPP-Ottawa to your friends list Get a Link to this Reply
Definitely post mint. If you remove the green crust you'll see a pitted crater underneath, where the original nickel surface was eaten away.
"Research is what I am doing, when I don't know what I am doing" --Wernher von Braun

Content of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_US

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 Posted 01/13/2020  7:14 pm  Show Profile   Bookmark this reply Add mcshilling to your friends list Get a Link to this Reply
Yep that's what it is then, thanks SPP.
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 Posted 01/13/2020  9:34 pm  Show Profile   Check SPP-Ottawa's eBay Listings Bookmark this reply Add SPP-Ottawa to your friends list Get a Link to this Reply
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.

"Research is what I am doing, when I don't know what I am doing" --Wernher von Braun

Content of this post is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License. See: http://creativecommons.org/licenses...0/deed.en_US

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 Posted 01/14/2020  09:05 am  Show Profile   Bookmark this reply Add mcshilling to your friends list Get a Link to this Reply
Yes that is what I had on mine but not that bad, thanks for the info.
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