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<p>[QUOTE=&quot;brinssig, post: 4057419, member: 12147&quot;]I already know about not using MS70 on copper coins from personal experience.&nbsp; I tried using it on a corroded Indian Head cent I had found in a roll of cents.&nbsp; After a few days when I took it out the coin is about half the thickness of what it was.&nbsp; You can hardly tell it is an Indian Head cent with its features being very faint on the coin.&nbsp; I am assuming half the coin disappeared because half of the coin was corrosion and the MS70 got rid of the corrosion which made up half of the coin? I also tried the MS70 on a couple Lincoln Wheaties cent which both turned a deep shade of blue.[/QUOTE]</p><p><br /></p>

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