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<p>[QUOTE=&quot;TheMont, post: 2585102, member: 80121&quot;]I bought MS-70 and after trying it on a few unimportant coins I have put it on the shelf and gone back to acetone. While acetone does not effect the coins , only the surface contaminants, MS-70 effects the coin. First it is, according to it&#039;s label, recommended for AU-BU coins to &quot; restore the brilliant surfaces that remain under the tarnish and years of surface contamination that has accumulated on your coin.&quot;</p><p>MS-70 will remove tarnish , patina, and toning and IMHO doesn&#039;t leave a natural looking luster to the coin. By the very nature of removing tarnish, patina, and toning, the manufacturer is telling you that MS-70 does react with the coin..</p><p><br /></p><p>It is, again according to the label, recommended for Mint State or Proof coins, but the method of application would seem to cause hairline scratches on Proof coins. Again, quoting the label, &quot;Soak a Q-tip with MS-70 and gently apply to the coin. Allow a few seconds for MS-70 to penetrate the contamination on the coin and then gently &#039;message&#039; the surface of the coin with a Q-tip which has been soaked in MS-70&quot; . The contents of the bottle appear to be similar to a regular metal cleaner and brightener, similar to the paste I use to clean my knife blades.[/QUOTE]</p><p><br /></p>

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