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<p>[QUOTE=&quot;gatzdon, post: 285340, member: 8247&quot;]It was crud, but instead of having a small noticeable spot, I later had a larger dull area.&nbsp; Didn&#039;t make a difference in value as it was a circulated proof, but I was amazed at how easy it was to mar the surface.&nbsp; Now, if acetone or thioureic acid doesn&#039;t take it off, it stays.&nbsp; (that&#039;s another point worth making, don&#039;t use thioureic acid on older coins, the acid dip will make the pits visible to the naked eye.&nbsp; The newer the coin, the less likely there is to be any pits, but if the coin has any value, why take the gamble).[/QUOTE]</p><p><br /></p>

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