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Impaired Proof

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United States
1915 Posts
 Posted 06/24/2011  8:25 pm Show Profile   Bookmark this topic Add seal006 to your friends list Get a Link to this Message Number of Subscribers
How much value is lost on a Lincoln Proof that is impaired? I have a 1979-S Type II that is BU and stunning except for the big carbon spot just right of Lincoln's face.
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desertgem's Avatar
United States
860 Posts
 Posted 06/24/2011  9:45 pm  Show Profile   Bookmark this reply Add desertgem to your friends list Get a Link to this Reply
Generally , I consider an impaired proof as one that has been circulated and thus less than MS-60. Yours might be described as MS-60, environmentally damaged or DETAILS MS-60 by some. And the value takes a big wack unless it is a rarer date. For the type II, I have no idea of how much loss. Photo might help.
Edited by desertgem
06/24/2011 9:46 pm
Pillar of the Community
United States
1915 Posts
 Posted 06/24/2011  10:16 pm  Show Profile   Bookmark this reply Add seal006 to your friends list Get a Link to this Reply
Here is a photo.



Impaired-Proof
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smokeriderdon's Avatar
United States
3755 Posts
 Posted 06/24/2011  10:52 pm  Show Profile   Bookmark this reply Add smokeriderdon to your friends list Get a Link to this Reply
Yeah, 60 details at best. There are also scattered smaller black spots. Unfortunate because thats not a bad penny otherwise.
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desertgem's Avatar
United States
860 Posts
 Posted 06/24/2011  11:17 pm  Show Profile   Bookmark this reply Add desertgem to your friends list Get a Link to this Reply

Yeah, that's bad, and to be blunt truthful, I think it would be hard to sell even at a fraction of the value.
Sorry as much of the coin looks fairly good.
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sel_69l's Avatar
Australia
21786 Posts
 Posted 06/25/2011  12:07 am  Show Profile   Bookmark this reply Add sel_69l to your friends list Get a Link to this Reply
Those spots are often called 'carbon spots', but they mostly have a large component of copper sulphide in their coloring. Not much you can do about that.

Has anyone tried to help a spotted impaired proof with Verdicare? I would be reluctant to try anything else.

Vinegar may help on a copper coin with such discoloring in perhaps fine condition, but I would never use vinegar on a proof, discolored on not.
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amida17's Avatar
United States
4897 Posts
 Posted 06/25/2011  12:22 am  Show Profile   Bookmark this reply Add amida17 to your friends list Get a Link to this Reply
Just be happy it was only a $4 coin to start.
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