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<p>[QUOTE=&quot;rlm&#039;s cents, post: 996108, member: 7957&quot;]Sorry, Doug, but you need to go one step further.&nbsp; Unless you can prove me wrong, the color difference of the wood grain shows up only as the metal tones (oxidizes).&nbsp; What you have done is to remove all of the exposed (oxidized) surface.&nbsp; The grain will not show up until the surfaces re-oxidize - IMHO even on a 2 sided grained coin.&nbsp; Now, after some period of time and the cleaned area starts to brown again and the grain does not return, then you have proved that it is environmental.&nbsp; If the lines return, then the lines are on the coin.</p><p><br /></p><p>Just guessing at this stage, but my money says this one is environmental.&nbsp; Those lines are too uniform.[/QUOTE]</p><p><br /></p>

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