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<p>[QUOTE=&quot;mark_h, post: 567585, member: 3726&quot;]Hello and welcome Fred.&nbsp; Yes - there is a time and place to &quot;conserve&quot; these coins if at all possible.&nbsp; I worked with a batch of burned kennedy halves and nothing would help those coins.&nbsp; All were sold for scrap silver. Those were the only coins I have ever worked on - we tried dipping one of the better soot covered coins, but to no avail.&nbsp; So in this case I do not think you are hurting the coins.&nbsp; Just read what is posted around the board.&nbsp; There is a difference between cleaning and conserving - that is what I have learned lately.&nbsp; Cleaning to me is a method to make the coin look like a higher grade and conserving is just trying to preserve the coin from further damage. I have not tried either, but others around have.[/QUOTE]</p><p><br /></p>

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