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<p>[QUOTE=&quot;TheFinn, post: 3098171, member: 90102&quot;]And the soap and water is used to remove the gunk that is already reacting with that luster.&nbsp; If the coin is only tarnished, there is no need to wash it.&nbsp; But if it is dirty, then it needs to be removed.&nbsp; This is not a blanket method.&nbsp; I won&#039;t use acetone to clean coins - especially copper - because of how it messes with the luster and raw metal surfaces.&nbsp; For polar solvents, IPA is as tough as I will use.[/QUOTE]</p><p><br /></p>

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