IS using "MS 70 " product coin cleaning? Acetone ?
Verno
Posts: 327 ✭✭✭
Hi all(especially TPG Insiders)
Will using MS 70 product affect the coins surfaces a preclude a silver unc coin from straight grading? Will it get "sniffed" and kick out from a secure holder? Product claims it is not a dip..does that make a difference?
On older silver coins, will acetone hurt a chance of a coin getting straight graded...does it get "sniffed" out
I am not looking to coin dr...just want to make best possible presentation within the rules....thoughts on the subject?
Thanks!
RJ
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Not an insider....and never tried MS 70.
But I did send in a group of raw coins with which I did a quick soak in acetone on ALL of them, followed by air dry. Everything straight graded. First, it's pretty inert when it comes to any metal, and second, it probably all evaporates away. So, I'd say you are safe with acetone.
No it won't. It may uncover a cleaned coin under the toning though.
I cannot speak regarding MS 70 as I've never used it, then sent in a coin for grading. I believe it to be safe provided a thorough rinse. Acetone on the other hand is completely harmless (again provided a thorough rinse). There are some who acetone and then don't rinse. I understand that's good too.
If you print a coin accidentally it can be saved with Acetone. If you're jittery about a print error on the safe side and soak the coin.
As always, never rub any coin in any way or we send big burly guys to your house to straighten you out.
PS, MS70 will turn some copper red/purple, leading to no-grades.
Avoid both on Proof Indian Cents
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Before using MS70 (a base cleaner) or eZest (an acid cleaner) experiment with coins of little value. Lots of experience is a good idea.
The two will not prevent a coin from straight-grading. But as Wabbit said they can reveal problems that were otherwise hidden. And results on copper can be especially disturbing.
Dipping or touching up will not necessarily improve a coin's appearance. It can be quite the opposite.
A good rule of thumb is, if uncertain of their use, application or the likely result, don't do it.
Acetone is harmless but it will strip off organic contaminants on circulated coins and may change their appearance. A "dried-out" look is possible.
Lance.
Dip them all, no harm. In fact a blast white coin trumps those puke ugly toned coins any day. I wouldn't buy into the MS70 marketing crap though. You can get a quart of acetone at the local hardware store for .99 cents.
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What happens when you use ms 70 on a toned coin? Does it remove the toning...does any legal product enhance toning, like using lemon oil on beautiful wood?
MS70 won't remove the toning. EZest will. Acetone does nothing to the coin but will remove and organics on the coin (recent fingerprint for example). I will rinse all the raw coins I receive in acetone so as to remove any PVC (seen or unseen) and any recent fingerprints (prior owner).
bob
MS70 will remove a great deal of the toning on most coins. I see it all the time.
I have only "used" in a couple of times on Morgans with haze and it worked well but did not affect the toning. So, limited experience here. Never tried on any other denomination. My bottle is probably ten years old.
bob
That is comparing apples and oranges.
Acetone is not a substitute for MS70. MS70 is a water soluble detergent. Acetone is a polar organic solvent.
You put the lime in the coconut.
If you can't tell that it was cleaned then it wasn't cleaned. If it removes only the contaminant, it really wasn't cleaned. True cleaning would usually leave some sort of evidence that it was done, which is why coins get bagged for cleaning.
I've seen MS 70 used on an unc. silver coin that had a layer of yellow silver sulfide hiding its luster. It did an excellent job. As Wabbit wrote above, though, MS 70 will remove toning on coins and may reveal or accentuate other problems that said toning may have obscured, such as hairlines.
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MS70 seems to remove some toning. I used it on a 65 sms half that had an ever so slight yellow tone, it was white after. I've also used it on some darker toning and it seems to not remove it. It's great at removing haze from proof silver.
Use a cotton q-tip and roll it around on the surface, don't rub. Try to avoid getting it on your fingers since it is a base, it will also make them slippery.
Only use it on uncirculated or proof coins.
Collector, occasional seller
MS70 will absolutely remove toning - don’t know why people say it doesn’t but I can think of two reasons: they’ve never tried it or they want people to get undesirable results as a sort of “didnt you learn your lesson” thing.
MS70 doesn’t remove terminal or extremely heavy toning. It will remove subtle, colorful and nice album toning and leave you with brown, black and often blotchy toning that you will just want to fully dip off anyways. Stick to blast white for MS70. It’s good for coins that have Black crud stuck in the details of the coin.
Also acetone can remove color from a coin so be careful. It removes anything organic. Sometimes organics make up a thin film over the coin that give it some pretty colors. Remove the film and you change the look. I’ve had some nice lavender shaded nickels come out light brown with just some acetone.
You really should decide whether or not you want to risk altering the coin negatively by trying to improve it. I’ve had far more failures trying to improve toned coins by any method than successes.
As stated above, acetone will remove organics, and have no effect on the metal. It has been mentioned that it seems to affect copper cents at times... that is usually because of some previous residues or improperly rinsed chemicals used before the acetone. There will be no way of knowing this, so there is a bit of a gamble in such cases. I have done rather extensive experimentation with other cleaners in my pursuit of knowledge. Those experiments were done on common, no value coins. Now, I only use acetone, and I rinse/soak any raw coins prior to storage. While I cannot prove this, I learned from Russ (years prior to his demise) that rinsing ASE's upon receipt would prevent milk spots. I have done this, and have not had any milk spot problems... but, cannot prove it was the acetone rinse... sometimes ASE's just do not spot. Cheers, RickO