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 Replies: 19 / Views: 6,429 |
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Bedrock of the Community
United States
19931 Posts |
Just thought I'd share the process I'm using to long-term store my Lincolns SUPPLIESPowder-free rubber gloves Acetone (reagent grade, ACS grade is good) Electronic parts duster (canned air) Disposible plastic transfer pipet Petri dish Airtite holder Exacto knife Kimwipes (small) 1) Place gloves on. 2) Open airtite, separate and blow out with air. Inspect O-ring for rough inside edges that might hang over onto the coin. Trim with Exacto knife if necessary (usually is). 3) Remove coin from original holder and blow with air to remove cardboard and loose debris. 3) Using transfer pipet, Rinse the coin with acetone on both sides. (This removes any additional lose surface debris and moisture.) Use Petri dish to collect rinsings for disposal. 3) Drop on to Kimwipe and gently pat dry. The acetone will evaporate almost instantly. 4) Transfer from Kimwipe into airtite holder. 5) Blow lid of airtite with air to remove any possible dust and seal the capsule. I think my coins will last generations after this treatment.  Edited by BadThad
10/21/2007 10:42 pm
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Pillar of the Community
United States
7123 Posts |
I follow pretty much the same proceedure ,,except for the petrie dish,acetone,exacto knife,Kimwipe and pipet other than that they are Identical ! Metalman |
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Pillar of the Community
United States
819 Posts |
That sounded more like Chem lab than indulging in a hobby. o.o
I admire your dedication to the preservation of your coins.
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Pillar of the Community
United States
1691 Posts |
BadThad, you're on the top of my "TO BUY FROM" list!
Edited by atlashealth
10/14/2007 11:14 am
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Bedrock of the Community
United States
20753 Posts |
follow pretty much the same proceedure ,,except for the petrie dish,acetone,exacto knife,Kimwipe and pipet other than that they are Identical !
Metalman
Why is it every time I want to say something, someone beats me to it?
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Valued Member
United States
206 Posts |
acetone? what are you trying to do, clean your coins?
Sorry, I don't really know too much about this. I was just wondering what the purpose of it is. Any feedback would be greatly appreciated!
- Ben
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Pillar of the Community
United States
1952 Posts |
acetone is not considered cleaning as it will not change the coins appearance except to remove the dark tone and rid the coin of the debris that are left on the coin by handling it (it will not remove fingerprints)
Gary
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Valued Member
United States
499 Posts |
Acetone will not remove fingerprints but it will remove the oils that could show as fingerprints months after encapsulatioZiggy
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Pillar of the Community
United States
1541 Posts |
So its perfectly alright to give a coin an acetone bath? Does it remove toning?
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Valued Member
United States
99 Posts |
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Bedrock of the Community
 United States
19931 Posts |
quote:
So its perfectly alright to give a coin an acetone bath? Does it remove toning?
I used reagent grade acetone on a lot of coins, it's never changed their appearance at all. I primarily do it before encapsulation to assure ALL moisture is removed. That way I know it will NEVER change from the day I put the cover on. No air or water exposure, no changes to appearance. Lincoln Cent Lover!VERDI-CARE™ INVENTOR https://verdi.care/
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Pillar of the Community
Egypt
3470 Posts |
very systematic and professional, thanks
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Valued Member
United States
206 Posts |
Is using acetone considered safe to use, and it is also considered "cleaning" or "future cleaning" (if that makes any sence...)
Sorry for all of the questions. This is just an interesting topic and just wanted some information...
Thank you very much.
By the way, your system seems very professional. It seems that you ahve put a lot of thought into it.
- Ben
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Bedrock of the Community
United States
12437 Posts |
quote:
So its perfectly alright to give a coin an acetone bath? Does it remove toning?
In the opinion of this chemist, yes it is perfectly safe because acetone is an organic solvent so it will only remove organic material (dirt, finger grease, etc) and not disturb the surface of the metal. The only toning that I have seen removed by acetone is really bad AT but it will not touch NT. Using acetone does not fall under the header of "cleaning" when cleaning is used to describe a harmful procedure that will damage a coin. Using acetone would be considered "conservation" and can potentially protect a coin from future or further environmental damage. |
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Pillar of the Community
United States
1541 Posts |
Thanks. I never knew. I will give it a try.
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Bedrock of the Community
United States
20753 Posts |
At the top of the page there is place that says SEARCH. I've never tried it but you could try typing in Acetone. Might find lots of post on that subject. Some time back I heard so many statements of good and bad of Acetone, I tried several experiments both using comercial grade Acetone from Walmart and chemical grade from a chemical supply, School Lab. One web site stated leaving a Copper coin in Acetone in the sunlight would distroy the coin. I took a clean glass beaker, chem lab type object, placed several coins in the beaker, added Acetone enough to cover the coins. Not sure anymore but I think there was an Wheat cent, Indian cent, Nickel, Liberty Head Dime, modern quarter. Again, can't remember exactly what the coins were. The beaker, covered, was in the dark for one day, in sunlight for one day. Coins removed, rinsed with distilled water. NOTHING, and I mean nothing happened to those coins. The Dime did appear a bit cleaner but no reaction to the other coins. Experiment repeated with both types of Acetone. |
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Replies: 19 / Views: 6,429 |
Posted 10/14/2007 11:08 am
