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 Replies: 19 / Views: 1,564 |
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Pillar of the Community
 Canada
9873 Posts |
That's not verdigris, it's PVC damage.
Acetone will remove it but there may well be underlying corrosion.
You must use pure acetone not something like nail polish remover.
After soaking , rinse with clean acetone.
Always be careful when using acetone.
"Dipping" is not considered cleaning...
-from PCGS website
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Pillar of the Community
United States
878 Posts |
 PVC |
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Bedrock of the Community
United States
10982 Posts |
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Pillar of the Community
United Kingdom
945 Posts |
As to the original question, whether or not to get it graded, I am not really the best person to cast a vote because I am a "non-grader". I would think the coin would be "about Fine" on the UK grading system. I am not sure what PCGS would give it, even if you can avoid any details note, but at that grade I am not sure it would be worth the expense.
Why not just enjoy it raw?
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Pillar of the Community
United States
1949 Posts |
Most of that should come off with acetone bath
Would probably grade XF40 at PCGS
Nice piece!
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Moderator
 United States
98746 Posts |
Very nice coin, and you should try acetone (the good stuff) soak first for a day. on this coin there are no mirrored surfaces so a 'milking or residue should not be an issue. Just be sure to use fresh (not already used acetone (could have contaminates in it).
But in my opinion, this one not really worth the grading costs.
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Valued Member
 Australia
140 Posts |
Thank you for all the comments. I will try fresh acetone and see what happens.
As has been suggested, it's probably not worth grading as the coin has to be at least AU to offset the grading costs. It's a coin I intend to keep as before finding it at auction I didn't know the UK produced dollars long ago.
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Valued Member
Australia
140 Posts |
I soaked the coin in fresh acetone overnight and then rinsed it again with more acetone. All the small green spots have disappeared and at least to the naked eye it does not appear the corrosion caused any pitting. The tarnish was left intact like I wanted.
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Pillar of the Community
United Kingdom
945 Posts |
Well done!
Pictures of the result would be appreciated.
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Valued Member
Australia
140 Posts |
  PVC is an awful plastic to keep coins. I've seen coin sets released by the Royal Australian Mint as late as 1990 badly affected by plastic degradation. Printed cardboard can be affected too, sometimes leaving a sticky mess that's difficult to clean up. It's so good we have much better options now. Edited by ClusterCoin
04/21/2024 08:44 am
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Pillar of the Community
United Kingdom
945 Posts |
Thanks for that - looks a lot better.
I would have liked to see the other black marks go too, but I suspect that would require a stronger chemical process, which would destroy the rest of the patina.
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Moderator
United States
98746 Posts |
Congrats on a good turnout on this coin
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Moderator
United States
190135 Posts |
Looking good!  |
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Valued Member
Australia
140 Posts |
As a follow up to this thread, I submitted the coin to PCGS as part of a large submission, just to see what grade they would give it.
Well, they weren't fooled, and gave it a Details-Cleaned designation. But they think the coin is AU, which I think is rather generous.
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Moderator
United States
190135 Posts |
Quote:
Well, they weren't fooled, and gave it a Details-Cleaned designation Bummer.  Quote:
But they think the coin is AU, which I think is rather generous. Excellent! |
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Replies: 19 / Views: 1,564 |
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First Page
Posted 04/17/2024 2:39 pm
