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<p>[QUOTE=&quot;nesvt, post: 475405, member: 1749&quot;]99.99% of the time I use acetone in a sealed glass jar, and then rinse in fresh acetone after soaking.&nbsp; Once in a while on a mint state coin with no hairlines, I will use ammonia.&nbsp; You have to be careful with either.&nbsp; Acetone fumes are very dangerous and highly flammable.&nbsp; Ammonia will take all debris off a coin and can expose every microscopic hairline scratch.&nbsp; Again, VERY DANGEROUS.[/QUOTE]</p><p><br /></p>

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