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 Replies: 20 / Views: 3,433 |
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Pillar of the Community
United States
1314 Posts |
Rather than debating in the abstract, I thought I'd pick a coin and see what others say about trying to improve it's condition. What say you?   |
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Pillar of the Community
United Kingdom
2624 Posts |
I would wipe that with cotton wool dipped in acetone, rinse off and wipe dry with a lintless cloth and then apply verdicare.
Not sure if others would agree with me, but I can't see that causing too much trouble.
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Pillar of the Community
United States
5825 Posts |
The damage has been done so DavidUK's suggestion is reasonable.
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Pillar of the Community
Canada
5324 Posts |
One of these instances where cleaning can't hurt.
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Rest in Peace
United States
18456 Posts |
 With DavidUK . only there's more green corrosion than verdigris, might want to let it sit in the Verdi-care at least 24 hours. |
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Bedrock of the Community
United States
19948 Posts |
Obviously it has some copper, but what is the composition?
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Bedrock of the Community
United States
19948 Posts |
Quote:
only there's more green corrosion than verdigris That's one in the same! Verdigris is COPPER CORROSION. Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Pillar of the Community
 United States
1314 Posts |
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Bedrock of the Community
United States
19948 Posts |
Cupric-nickel corrosion is usually quite difficult to remove without stripping the coin. Often you can get some improvement with VC but normally some of the corrosion will remain. It would be an ambitious project. It'd probably be better to just buy a new coin.
Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Pillar of the Community
 United States
5828 Posts |
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Pillar of the Community
United States
1314 Posts |
I did things I'm not proud of. But this is the result.   |
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Pillar of the Community
United States
5828 Posts |
Yikes... What did you do?!
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Pillar of the Community
United States
8516 Posts |
Toothpaste ?
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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Bedrock of the Community
United States
19948 Posts |
Well, which is worse, corroded or cleaned? I'd say it's a tie. LOL
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Moderator
 United States
188213 Posts |
Quote:
If this were a more valuable coin, I probably would have stopped there. But I'm experimenting, and simply wanted to see what else I could learn. I can certainly understand that. |
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Pillar of the Community
United States
1314 Posts |
Like I said, I'm not proud of what I had to do to remove the hard green crust, but maybe the coin can begin to age with a more pleasant patina. First I started with an acetone bath just to remove the easy stuff. Then I added a drop of Verdi-Care to each side and spread it around. (It seems to bead up rather than "wet" on the metal. But it will cling to the corrosion spots. I don't know if I have improperly prepared the coin, or if it is supposed to work that way.) After letting it sit in a warm spot for a few hours, much of the green came off. What remained was the hard and crusty stuff, and a lot of the brown staining. If this were a more valuable coin, I probably would have stopped there. But I'm experimenting, and simply wanted to see what else I could learn. Next I swabbed on some phosphoric acid. That stuff was too strong to be easily controlled and it very quickly removed the stain, and etched the surface.  To remove the "frosty" appearance, I rubbed it with a fine polish, similar to tooth paste. This caused the polished look on the central features. I'm guessing a little time in the pocket, followed by exposure to air, will help give it a more natural look. I'm not suggesting that other people do this to their coins, or even that it is a good idea for me to be doing it to mine. I'm just showing what happens if you do certain things to a coin. Naturally, I would never sell a coin that had been cleaned without full disclosure. In a little bit, I'll show some of the more conventional applications of Verdi-Care. Comments are always welcome, and in the case of this topic, I'm expecting some criticism. |
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Replies: 20 / Views: 3,433 |
Posted 10/30/2015 09:39 am
