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<p>[QUOTE=&quot;wunderer, post: 919485, member: 25986&quot;]<b>Interesting opinions</b></p><p><br /></p><p>A good read. Back in the 60&#039;s, cleaning was taboo, period. PCGS will label a coin as cleaned. I am guessing that cleaning is more accepted than it used to be, when admitted too and price adjusted to match. I do see a value in removing corrosion, in that the corrosion can be stopped from progressing. I have read that olive oil to preserve and hot hydrogen peroxide to treat (in reverse order) works for copper. I have not tried that, but I think I will experment with some no value coins. As far as corrosion inhibiting, I have no idea what the best way to approach would be.[/QUOTE]</p><p><br /></p>

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