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<p>[QUOTE=&quot;GDJMSP, post: 2547558, member: 112&quot;]To answer your question yes I have, many times. Over the years I&#039;ve experimented with just about everything you can think of, including all forms of harsh cleaning.</p><p><br /></p><p>Your point, at least I think, is for folks to at least try MS70. I started suggesting that almost 15 years ago. For MS70 does have its uses, and if used for what it was designed for, it works quite well.</p><p><br /></p><p>But that&#039;s kind of the thing - what it was designed for, what it was intended to do. And I think that&#039;s what most people fail to understand, namely that each different substance whether it be distilled water, acetone, xylene, MS70, CoinCare, Blue Ribbon, E+Z+est, Safe Clean, TarnX, or any of the other myriad coin cleaning products out there - each and every one of them is designed to do certain things, and not do certain other things.</p><p><br /></p><p>And each and every one of these things will do what it was designed to do. The problem that collectors face, and this is far and away the biggest problem, the truly hard part of the job - is to KNOW which product to use on WHICH coin, and HOW to use it; and NOT USE on which coin.</p><p><br /></p><p>And that, that is not something that can be readily answered in a forum because it requires experience and in-hand examination of the coin in question. Because if you don&#039;t do everything just right or use the wrong product on the wrong coin - you not only can but likely WILL ruin the coin.</p><p><br /></p><p>So back to MS70, what should it be used for ? When it was designed one the most common problems that collectors faced was what is known as haze on modern Proof coins. And that&#039;s what MS70 was intended to fix, that&#039;s even where it got its name. For you could (supposedly) take a modern clad Proof that would otherwise have a shot at the 70 grade except for the ugly haze that held it back from grading that high. Use MS70 and VOILA ! - the haze is all gone <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /> And no harm done to the coin. And then you could get the coveted 70 grade on your coin.</p><p><br /></p><p>Of course that was back in the day when a 70 grade actually meant something, when they were not handed out as often as candy on Halloween ! But yeah, MS70 worked as advertised, the haze would, and will, magically disappear - as long as it IS haze, and not something else. But all the same, there is a caveat (as there usually is), you do NOT want to use MS70 on copper ! Not if you want to have a chance of your coin getting a clean grade anyway. For MS70 will turn copper a shade of blue or purple. And yeah it&#039;s pretty, and yeah sometimes copper does naturally tone those colors. But those who know coins, and the TPGs, are all too well aware that MS70 will do the same thing. So when they see a copper coin like that they become very suspicious and few get clean grades.</p><p><br /></p><p>As for the other reference mentioned by Insider about - &quot;8 hours in acetone and the green PVC is still there&quot; - 8 hours in acetone will absolutely not hurt a coin. And yes, in some extreme cases I even recommend leaving a coin in acetone overnight because if PVC residue has dried and is layered thick enough, a short soak in acetone may not get it all off. And since leaving it there overnight will absolutely not hurt anything, well there&#039;s no reason not to, and sometimes a reason to do it, but granted, rare.</p><p><br /></p><p>But usually, stress usually, if there is still &quot;green&quot; on the coin after 8 hours in acetone, it&#039;s NOT PVC residue to begin with - which is why it&#039;s still there.</p><p><br /></p><p>I guess the primary point is people don&#039;t go just trying things when you don&#039;t know what you&#039;re doing ! Don&#039;t make assumptions. As with the coin mentioned, there are several different things that can cause or create &quot;green&quot; on a coin. And acetone will only work on 1 of them ! No, it won&#039;t hurt anything to try it, but if it doesn&#039;t work, be very careful and think long and hard before you try something else. And maybe, consider letting somebody else address the problem.[/QUOTE]</p><p><br /></p>

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