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 Replies: 19 / Views: 3,249 |
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Pillar of the Community
 United States
3098 Posts |
After reading about the benefits of using acetone from past CCF threads I finally gave it a try. I have a nice AU Barber dime with some PVC residue on the obverse. I soaked it in acetone for a couple of hours and most of the green PVC residue came off, but not all of it. I've posted the "Before" and "After" photos. Do people think that further soaking will remove the remaining green? Is a couple of hours a reasonable time to keep the coin in the acetone? Too short? Too long? I know acetone is safe, but it's my first time using it and I don't want to do something wrong. Thanks for your suggestions on what to do.   Paul Bulgerin
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Bedrock of the Community
United States
20753 Posts |
May not have any further effects redoing the Acetone again. Yet nothing to loose either since Acetone will not effect your coin. Normally just a few minutes is enough but leaving a coin in for hours hurts nothing. You may try a few more times but if no further help, best leave it alone.
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Pillar of the Community
United States
7390 Posts |
 with JC, however if you do a prolonged soak remember that acetone will evaporate FAST so remember to check on it every few hours and add more as needed so the dissolved crud dosent redeposit on the coin. Plus, see how on the after photo there is slight discoloration where the spots were. Be careful of that on future coins. The metal underneath ages at a different rate which may look worse afterward but with this guy all it did was help! Nice coin  |
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Rest in Peace
United States
10625 Posts |
You may want to soak it over-night. I would not stop here as the PVC goo will likely grow back over time.
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Pillar of the Community
 United States
3098 Posts |
Thanks for the responses so far. I poured the acetone in a glass jar and put a cover on it to prevent evaporation. I gave it a quick rinse afterwards in a small fresh batch of acetone as well. Since soaking the Barber dime I've tried it on two other silver coins, neither of which had any PVC, just some light spots, and both of them turned out very nicely after just a short soak. I will soak the Barber dime some more and see what happens. Paul Bulgerin
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Pillar of the Community
United States
1314 Posts |
Would Verdi-Care help this coin?
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Bedrock of the Community
United States
10038 Posts |
Beautiful dime!
I use a clean baby food jar for soaking longer times. The lid keeps acetone from evaporating. I know they are not necessarily the most available things, but on a spot like that I have used a porcupine quill under my microscope to see if I can remove it.
The quill is soft enough not to scratch the coin (although I cannot guarantee it for every coin or type of quill!). I tested mine on coins with no numismatic value before using it on nice coins.
How much squash could a Sasquatch squash if a Sasquatch would squash squash? Download and read: Grading the graders Costly TPG ineptitude and No FG Kennedy halveshttps://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2 |
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Moderator
 United States
23522 Posts |
Quote:
Would Verdi-Care help this coin?
Thad says it's effective on PVC but at the unit cost I'd stick to acetone.  My first soak for this coin would have involved sealing it into a jar and not looking at it for 48 hours straight. Then, a rinse and an attack with a toothpick, followed by more iterations of a minimum 24-hour soak. Acetone will get it all if you work it properly. |
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Pillar of the Community
United States
3098 Posts |
I have used a bamboo skewer to try and loosen some of the green.
The coin is soaking again and I'll leave it for at least 24 hours to see what happens.
Paul Bulgerin
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Bedrock of the Community
United States
19963 Posts |
with SuperDave! Just one thing, any type of rubbing should ALWAYS be done with the under fluid. Even acetone will provide a bit of lubrication which will help keep from scratching the surfaces. |
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Pillar of the Community
United States
8517 Posts |
You can easily scratch silver so be very careful.
Oregon coin geek.....*** GO BEAVS ! ! ! ***
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Bedrock of the Community
United States
11951 Posts |
Nothing I can say that has not been. The coin is looking much better.
I agree that more soaking in acetone will continue.
As for the Verdi-care, I have used it on PVC with good results.
I know it has a higher cost, but I think it is a product collectors should
have.
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Bedrock of the Community
United States
10038 Posts |
Great stuff! How much squash could a Sasquatch squash if a Sasquatch would squash squash? Download and read: Grading the graders Costly TPG ineptitude and No FG Kennedy halveshttps://ln5.sync.com/dl/7ca91bdd0/w...i3b-rbj9fir2 |
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Valued Member
United States
430 Posts |
I'm a acetone addict. the stuff does good things to PVC but needs careful physical work also. I use a fine sable brush very wet. I hear long term baths or many repeated baths can dull the surface though. I only use it on silver coins.
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Pillar of the Community
Canada
9163 Posts |
I use acetone to get the grim off then put Verdi-Care on to clean the rest. Also Verdi-Care will stop the green from coming back and conserve the coin.
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Moderator
United States
23522 Posts |
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I hear long term baths or many repeated baths can dull the surface though. You heard wrong. It's physically impossible for acetone to affect metal except in one narrow use case involving copper, water and bright sunlight. |
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Replies: 19 / Views: 3,249 |
Posted 06/06/2015 11:08 am
