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<p>[QUOTE=&quot;kaparthy, post: 1022936, member: 57463&quot;]Obviously not.&nbsp; If you read about the minting process for proofs, you see that the planchets are washed and dried before striking, but not after. Lubricating the presses is a routine operation, but the working parts -- the moving parts -- are the only surfaces that need it.&nbsp; Dripping down into the dies is a quality control problem.</p><p><br /></p><p>I take it that you purchased the coin second-hand, in the aftermarket, rather than directly from the Mint.&nbsp; There is not much you can do, except return it to wherever you bought it.&nbsp; I hesitate to recommend any method for cleaning the coin.&nbsp; A common degreaser like alcohol, acetone (nail polish remover), xylene or&nbsp; even gasoline would do the work, of course, but the surface of the coin might be ruined and I have no experience on which to base any opinion.&nbsp; I&#039;m just cautioning you that there may be no way to fix the problem except to return the coin.[/QUOTE]</p><p><br /></p>

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