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 Replies: 20 / Views: 7,021 |
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Bedrock of the Community
 United States
12477 Posts |
In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
Edited by spru
11/21/2017 10:45 pm
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Pillar of the Community
United States
3058 Posts |
Ewwwww!  |
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Pillar of the Community
United States
3479 Posts |
Thanks for providing this educational post! So many on here talk of PVC damage but few provide pictures that illustrate what it looks like.  |
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Rest in Peace
10197 Posts |
Need to call it the PVC Pox!
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Moderator
 United States
23522 Posts |
Phew. That's among the worst cases I've ever seen. And acetone having removed it is proof that it was PVC.
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Bedrock of the Community
 United States
12477 Posts |
Quote:
So many on here talk of PVC damage but few provide pictures that illustrate what it looks like. That's what I was thinking and why I posted this. Now, it may come in many different forms and affect different metals in different ways. I suspect in this case, the PVC residue condensed with moisture in the air inside a 2x2 (on one side, probably facing up) and that is why it manifested as tons of little dots. Quote:
And acetone having removed it is proof that it was PVC. Exactly. I was unsure before the soak but, the ability to remove it with acetone & q-tip and the color of what the q-tip removed made it definitive. In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
Edited by spru
11/21/2017 11:45 pm
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Pillar of the Community
United States
1840 Posts |
Ahhhh noooo  |
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Bedrock of the Community
Australia
21786 Posts |
If the alloy had just been copper nickel, the damage wouldn't have been anywhere near as extensive.
Zinc in the alloy is what helped the corrosion in this case.
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Bedrock of the Community
United States
12477 Posts |
Quote:
Zinc in the alloy is what helped the corrosion in this case. I'm no chemist/metallurgist but, that was my assumption. It does have some nice golden toning to it.  In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
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Pillar of the Community
United States
2403 Posts |
Would acetone help remove the PVC residue on this coin?  Don't mean to hijack your thread Spruett. This just seemed like the perfect time and place to ask about this. Edited by MontCollector
11/22/2017 03:26 am
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Bedrock of the Community
United States
12477 Posts |
Quote:
Would acetone help remove the PVC residue on this coin? In short, yes. I've soaked a few silver coins with varying fineness and the result is better than non-silver. It won't hurt the coin or luster (from experience) so, give it a shot! In Memory of Crazyb0 12-26-1951 to 7-27-2020
In Memory of Tootallious 3-31-1964 to 4-15-2020
In Memory of T-BOP 10-12-1949 to 1-19-2024
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Valued Member
United States
363 Posts |
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Pillar of the Community
United States
5029 Posts |
Great example you posted. That poor coin.
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Rest in Peace
United States
17900 Posts |
Nightmare example. Someone could use this coin as the primary actor in a numismatic horror movie.
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Valued Member
Canada
125 Posts |
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Rest in Peace
United States
10625 Posts |
That's the worst case of PVC damage I've seen!  |
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Replies: 20 / Views: 7,021 |
Posted 11/21/2017 11:13 pm
