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<p>[QUOTE=&quot;GDJMSP, post: 1674144, member: 112&quot;]Yes, when used properly MS70 is safe to use on Proofs. That is what it was primarily made for. But don&#039;t ever use it on copper coins Proof or Unc.</p><p><br /></p><p>But MS70 will not remove milk spots. Even commercial coins dips (acid) will not remove milk spots. There is nothing known that will remove milk spots.</p><p><br /></p><p>What MS70 is best at is removing what is known as haze. It will remove some spots from coins, depending on what caused them, but it will not always remove spots. </p><p><br /></p><p>That said, if you have no experience using MS70 then you are better off to not use it at all. Instead sell the coins that bother you and buy others that do not have any spots. Of course those too may develop spots in the future, or they may not.[/QUOTE]</p><p><br /></p>

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