| Author |
 Replies: 36 / Views: 4,703 |
|
Valued Member
United Kingdom
115 Posts |
Hi folks, Further to my relentless sorting and grading job, I came across one of these. Only thing is, it has a build up of crud on one of the sides. The other side, whilst not in A1 condition, is fine. My question would be whether or not this example is valuable enough not to even touch the crud, or should an attempt be made at clearing it off? Your thoughts and suggestions are much appreciated...   |
|
|
|
Pillar of the Community
United States
597 Posts |
it could be real nice! if it were my find it would go into a jar with lid containing nail polish remover for 1 week then all that crud should be gone then a good long soak in mineral oil and you might just have found some good $
|
|
Pillar of the Community
United States
979 Posts |
That might be too much. Maybe just acetone and a wooden toothpick?
|
|
Valued Member
 United Kingdom
115 Posts |
thank you. Does acetone not clean up the coin which is so abhorred by collectors? It won't come out looking all shiny will it?
|
|
Moderator
 United States
187702 Posts |
Quote:
would go into a jar with lid containing nail polish remover for 1 week I would not do that. While nail polish remover may contain acetone (not all do), the certainly do contain other things that may or may not damage a coin. BadThad always recommends following the polarity ladder: water, acetone, xylene. One at a time, in that order. Once the crud is gone, stop. Quote:
Does acetone not clean up the coin which is so abhorred by collectors? It won't come out looking all shiny will it? You may want to read this experiment first... https://goccf.com/t/129677 |
|
Rest in Peace
United States
7075 Posts |
A toothpick can leave a nasty scratch. I've heard that porcupine quills are safe but I haven't tried that so I can't say for sure.
If you use anything be sure it is distilled water and pure acetone from a hardware store.
You may want to find a gunky coin from your pocket change to practice on first. That's how I know a toothpick will scratch a coin.
|
|
CCF Sponsor
United States
702 Posts |
If you don't push on the metal but rather just the crud, a toothpick shouldn't hurt. You have to be very careful though. I second jbuck - that a week in nail polish remover is too much.
As always be VERY careful when working with acetone.
|
|
Valued Member
United Kingdom
115 Posts |
I will give it a try, for sure, I'll pick up some acetone tomorrow ( I used to work in a wafer fab and there was literally GALLONS I could have had!)
I wonder, then if IPA would be any good, Acetone is basically oxidised IPA. I have a good source of IPA. Interestingly, to make the ketone acetone, rather than oxidising the IPA, it can be done the other way round by dehydrogenising(same end result) and the best catalyst for that is copper. I wonder if the reaction from the copper penny might produce different/better results in the cleaning process?
Interesting......
Anyway, thanks for your advice, I take it the Penny is worth enough to bother with this? I would like to preserve it for when I might have kids myself one day!
|
|
Pillar of the Community
United States
1339 Posts |
Paul g....the 1912s is a really good date...for sure worth saving for the kids!!! looking forward to hearing how the restoration goes!
|
|
Pillar of the Community
United States
2200 Posts |
If you can't get the crud off, just remember that it adds dimension and character.
|
|
Valued Member
United Kingdom
115 Posts |
Well I have it soaking in DI-ill leave it an hour and see if it loosens off....
|
|
Valued Member
United Kingdom
115 Posts |
...then I'm gonna try 40% H2O2
|
|
Pillar of the Community
United States
1007 Posts |
Leave it like it is. It gives the coin character. When I'm 100 years old I'll be covered in crud too.
|
|
Valued Member
United States
81 Posts |
I would try experimenting with other coins first to make sure you get yor desired outcome.
|
|
Valued Member
United Kingdom
115 Posts |
I am, sorry, I never made clear I was doing it with an old coin with similar gunk on it, an old farthing. Soaked it, froze it, defrosted it. Didn't ping off. It's now in some peroxide....
|
|
Valued Member
United Kingdom
115 Posts |
....H2O2 stripped it clean, acetone next....
|
| |
Replies: 36 / Views: 4,703 |
Posted 11/13/2012 4:07 pm
