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<p>[QUOTE=&quot;lakebreeze, post: 177840, member: 2720&quot;]<b>Want to know</b></p><p><br /></p><p>I&#039;ve never cleaned my coins but I have some Barber dimes that look like dog dung and I dont think a proper cleaning can make them any worse. Some are totally black mostly on one side, I dont know what this black stuff is but its not pretty. Where detail is visible they for the most part look pretty darn good. The coin that I am most concered about is a 1900 o in v. fine on the obv. but the rev. has a brown coating which resembles a badly rusted piece of steel. Any ideas on what causes one side of these coins to be all black and in one case brown??? Thanks for any opinions or suggestions.[/QUOTE]</p><p><br /></p>

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