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 Replies: 9 / Views: 1,588 |
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Pillar of the Community
 United States
1949 Posts |
Hi, this is a coin from my collection I have been very curious to try and understand how the coin got such ugly toning, what environmental factors would cause a silver coin to tone like this?  |
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Pillar of the Community
United States
1436 Posts |
jdmern,  to the CCF. Toning is caused by environmental conditions that affect the surface metal of the coin. Heat (temperature), humidity (moisture) and handling (coin sitting in the same place w/out being moved) are the three main factors. |
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Pillar of the Community
Canada
1005 Posts |
That is a really nice coin. If you are wondering why it is spotty I have no idea. |
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Pillar of the Community
Canada
2781 Posts |
the brown and blue looks like it was stuck to something copper and the contamination leeched its way onto the silver, then harshly cleaned
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Pillar of the Community
United States
4132 Posts |
Spots like that make me think it had repeated condensation at some point.
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Pillar of the Community
Canada
1923 Posts |
I don't know how true this but I heard that coins in a cedar box will make dark toning as well?
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Pillar of the Community
Canada
2495 Posts |
Cause of the toning I'm not too sure about.
The coin's grade looks to be high EF, low AU.
However, there's obvious evidence the coin has been harshly cleaned.
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Pillar of the Community
 United States
1949 Posts |
The coin is graded as AU details, cleaning, under the loop there are no hairlines, so is the color or spottiness that gives evidence of it being harshly cleaned?
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Pillar of the Community
Canada
2781 Posts |
Quote:
evidence of it being harshly cleaned? you wont see hairlines (as in rubbed with a soft cloth or q-tip) through the gouges (especially on the rev). looks like someone took steel wool or a wire brush to the oxidization. it is beyond "cleaned" |
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Pillar of the Community
United States
1390 Posts |
 The reverse looks whizzed. Edited by The Silver Searcher
01/12/2013 12:40 pm
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Replies: 9 / Views: 1,588 |
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Posted 01/11/2013 9:51 pm
