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 Replies: 21 / Views: 4,693 |
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Moderator
 United States
56855 Posts |
Quote:
can you tell me why? Odd toning on the right side obverse. John1  |
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Pillar of the Community
United States
2558 Posts |
Really nice error for a modern Washington!
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Bedrock of the Community
United States
62064 Posts |
Do you live on the east Coast? There is a sulfur in the air that turns silver colored coins to tone yellow.
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New Member
 United States
33 Posts |
Well alright I did not realize that
Why is putting Acetone in this coin ok but cleaning other coins is not? Anything UNC. Can be cleaned?
Thanks for the welcome everyone
I live in the Midwest so not sure how it tarnished...I tried to touch on the edges...shoulda had gloves on
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Bedrock of the Community
United States
62064 Posts |
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Bedrock of the Community
United States
10635 Posts |
Never clean your coins. I think others suggested acetone to try to remove the yellow colour/toning on your coin. If you did "just crack these rolls from the mint" I'd question if the roll was really from the mint, and if so, the storage for the last 22 years has been less than ideal. Somehow you're having environmental toning/decolourization issues. Perhaps it's the paper the roll was wrapped in?   to the CCF!  Edited by merclover
03/11/2021 10:53 pm
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Pillar of the Community
United States
574 Posts |
Acetone is 100% safe for use on coins, as is Xylene.
Both have properties that will dissolve foreign material on the coin, but will not react with the metal (copper, nickel, silver or gold). What this means is that you're taking off the material that's causing the coin to darken without taking off any of the metal on the coin.
Circulated coins are fine to to treat this way. For uncirculated coins greater care is needed so as to not leave tiny abrasion marks on the coin, so something softer than a soft tooth brush might be best.
The finish on proofs is so smoothly done that virtually anything rubbed against their surface will leave marks visible under a scope, so any kind of conservation of those are best avoided.
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Pillar of the Community
United States
1667 Posts |
100% acetone, don't use nail polish remover with may have dyes or perfumes. 100% pure acetone from a hardware store.
The reason it's used is it's a solvent, this will remove oils (like new fingerprints) dirt shmuts and gunk, adhesives, paint, a whole lot of things, and any surface contaminants that may be on there from circulating and neutralize all that.
it doesn't affect toning at all though.
acetone or xylene though, will evaporate. so you'd use it in a covered dish or jar, just enough to cover the coin and cover it so the acetone doesn't evaporate off. change the acetone frequently otherwise you are adding dirt and contaminants to other coins as it gets dirtier.
Similar can be accomplished with distilled water if you are more comfortable with that as a starting point, pure H2O, it's neutral pH, contains no contaminants, and is natures solvent and will take on dissolved solids from the coins you put into it but it will need to soak longer than in acetone.
I started with distilled water, and never gone past it, for most finds from circulation it will do the trick, but it doesn't work on adhesives, gum, stuff along those lines, that's where acetone or xylene come in.
the issue comes with anything used to clean coins that moves away from neutral pH 7 in either direction. anything too acidic or too alkaline has the same affect, it's corrosive to a degree and will damage the surface of the coin.
I'm not a fan of xylene, mostly because the pH varies with P-xylene or M-xylene, O-xylene, it can range from 6.5 up to 8 pH. People say it's safe, but I'm not so sure after looking at the pH of the 3 xylenes, I'd want to be sure it's a 7 pH on the package.
If I HAD to go that far, I might give it that shot though, but honestly I just steer clear of anything besides distilled water, if that doesn't touch it, then it's staying on my coin. LOL.
I would try acetone also if I felt I needed to for an adhesive, but the coin better be worth the effort also, but for the most part I'm just removing dirt from circulated roll finds and a long soak and rise with distilled water has done the job for me.
Edited by Big-Kingdom
03/12/2021 10:56 am
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Moderator
United States
56855 Posts |
Avoid xylene, much to hard on your skin and lungs. John1 |
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New Member
United States
33 Posts |
Funny thing today, I found a 1992-S proof in the circulated coins
Clean or no-clean?
I like the distilled water idea to start, neutral and non-corrosive
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Pillar of the Community
United States
574 Posts |
Funny thing about proof coins is that they are kind of the opposite of business strike coins in that they are made to be kept pristine while business strike coins are made to be used. This means that a business strike coin that has been kept pristine gains added value, while a proof coin that has been put into circulation loses value. Looked at another way, finding a business strike coin that grades at MS67 would be a very good thing, while finding a proof coin that grades at PR67, technically the same grade, would be a disappointment. Looking at values for instance, that 1992 LMC in MS67 would be worth $10, while the 1992 LMC in PR67 would only be worth $6. Short answer, conserve the 1992 proof coin, but understand that it has already lost the majority of it's value just by virtue of being in circulation, so don't spend a lot of time/energy on it. Still a cool find though, isn't it? |
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Moderator
United States
56855 Posts |
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Bedrock of the Community
United States
62064 Posts |
Never touch the surface on a proof coin. It will ruin the surface of the coin. Any thing abrasive would be like sandpaper to a proof coin surface. The ones you find in circulation were released because there was a problem with coin.
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New Member
United States
33 Posts |
Yeah it is a cool find...I am certainly familiar with much of the coin etiquette
I started collecting over 30 years ago...its a hobby you can revisit at different times in life...one of my favorites
I'm happy I did the things I did to gather some pieces to my collection and now I'm even more interested in some of the key dates
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Pillar of the Community
 United States
2340 Posts |
to CCF Look fwd to many of your posts! smat |
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Replies: 21 / Views: 4,693 |
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First Page
Posted 03/11/2021 8:02 pm
