Will CoinSolve harm a coin's surface?
zeebob
Posts: 2,825 ✭
I have a few coins that have a bit of PVC on them. I'm going to give them a quick acetone bath before putting them in Saflips and sending them off to PCGS.
I have had the experience that air drying acetone (from Home Depot) can leave a bit of reside.
I use one bucket to as a soak bath.
A second bucket as a rinse.
A third as a final rinse.
Then air dry.
I was thinking that maybe the purity of the acetone isn't very good.
So I was wondering if you guys thought using CoinSolve from E&T Kointainer as a final rinse might allow the coin to air dry without any white reside but still not harm the surface of the coin?
Any experience or suggestions?
I've also tried distilled water as a final rinse, but had no better success than the two stage acetone rinse.
Also, when you guys soak pvc off do how long do you find is necessary for a soak? Minutes, hours, days, weeks? I've tried all of these and don't seem to get consistent results.
I understand soaking copper long term is a bad idea, but silver, nickel and gold are okay.
I have had the experience that air drying acetone (from Home Depot) can leave a bit of reside.
I use one bucket to as a soak bath.
A second bucket as a rinse.
A third as a final rinse.
Then air dry.
I was thinking that maybe the purity of the acetone isn't very good.
So I was wondering if you guys thought using CoinSolve from E&T Kointainer as a final rinse might allow the coin to air dry without any white reside but still not harm the surface of the coin?
Any experience or suggestions?
I've also tried distilled water as a final rinse, but had no better success than the two stage acetone rinse.
Also, when you guys soak pvc off do how long do you find is necessary for a soak? Minutes, hours, days, weeks? I've tried all of these and don't seem to get consistent results.
I understand soaking copper long term is a bad idea, but silver, nickel and gold are okay.
0
Comments
It does not harm the surface of a coin.
WH
The collectors and dealers still using these soft flip baffle me. I visit coin shows and I see dealers selling these darn things and dealers with tables full coins in soft-flips. I just roll my eyes and keep walking.
<< <i>I see dealers selling these darn things and dealers with tables full coins in soft-flips. I just roll my eyes and keep walking. >>
Maybe some dealers just don't know there's PVC in them damaging the coins, contrary to popular belief they’re not all super geniuses ya know!... what is the reaction when you tell them?
<< <i>
<< <i>I see dealers selling these darn things and dealers with tables full coins in soft-flips. I just roll my eyes and keep walking. >>
Maybe some dealers just don't know there's PVC in them damaging the coins, contrary to popular belief they’re not all super geniuses ya know!... what is the reaction when you tell them? >>
When I have mentioned it, reactions have ranged from looking at me like I was a kook (which is a possibility) that suffers OCD and worries over nothing to "yea, I know, but I just keep the coins in the same flips I bought them in," to "oh the soft flips protect the coins better." I gave up a year ago even discussing it with dealers at shows.
The info is out there. TPGs BB coins often enough for the malady that dealers know. I just assume most of them that use soft flips don't have enough respect for the future owner of a coin to move it into an 15 cent flip instead of a 6 cent flip. I try not to by cynical, but I have my bad moods like anyone else. I try to go the extra mile to take care of the coins that pass through my hands so future owners will be able to enjoy them for years. I just get sad when I don't see that sort of behavior from others. I'm probably just over reacting.
<< <i>This PVC stuff is really a pain in the neck. The guy that invented those darn soft-flips should be sat down and given a really good talking to...
The collectors and dealers still using these soft flip baffle me. I visit coin shows and I see dealers selling these darn things and dealers with tables full coins in soft-flips. I just roll my eyes and keep walking. >>
Those things should be banned by the ANA. Why do they even make or sell those anymore? Stupid.
<< <i>You should use Koinsolve instead of acetone rather than as a final rinse. It does the same thing as acetone, but is better.
It does not harm the surface of a coin.
WH >>
Why is it better? That stuff could get very expensive if you have a lot of coins to soak. I have never noticed any residue from using pure acetone from the hardware store.
I would recommend Blue Ribbon coin cleaner. A much cleaner solvent with at trace of lubricant. As a chemist I have access to very clean solvents and will typically use a fluoro-carbon solvent which has virtually no chemical activity with the coin or its oxidation.
You cannot get "pure" acetone from a hardware store.
<< <i>
<< <i>This PVC stuff is really a pain in the neck. The guy that invented those darn soft-flips should be sat down and given a really good talking to...
The collectors and dealers still using these soft flip baffle me. I visit coin shows and I see dealers selling these darn things and dealers with tables full coins in soft-flips. I just roll my eyes and keep walking. >>
Those things should be banned by the ANA. Why do they even make or sell those anymore? Stupid. >>
How could the ANA ban the production of a legal product??
Dave
<< <i>Chemicals and coins? Bad mix.
Dave >>
Exactly! That's why soft flips are bad. They leave PVC on the coin.
<< <i>
<< <i>Chemicals and coins? Bad mix.
Dave >>
Exactly! That's why soft flips are bad. They leave PVC on the coin. >>
A good coin needs no chemical, just an admirer.
``https://ebay.us/m/KxolR5
<< <i>If you are using Acetone from home depot the coin will have more residue when you are done than when you started.
I would recommend Blue Ribbon coin cleaner. A much cleaner solvent with at trace of lubricant. As a chemist I have access to very clean solvents and will typically use a fluoro-carbon solvent which has virtually no chemical activity with the coin or its oxidation. >>
I don't want lubricants on my coins, especially gold and silver ones.
It is probably best to have a clean white cotton towel with nap to tamp on the acetone and to once again tamp it dry. An optional stage after that is what I do and that is to use a mild dish detergent with water and massage it with my fingers on to the coin and then wash down LIBERALLY with water which I then tamp dry. I have used this for many years and the coins are quite good in appearance.
Sometimes there is some stubborn residue on the coins and will use Coinsolv or other bits to clean with tamp or Q-tip gently and then clean as above AFTERWARDS.
The only danger that I have run into is not using clean products or when the coin has large residue in uneven amounts so that when it is removed, there is color change between areas that had more residue from the other areas on the coin surface.
Well, just Love coins, period.