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<p>[QUOTE=&quot;satootoko, post: 192977, member: 669&quot;]Olive oil is an extremely weak acid - which is why it takes so long to do anything.</p><p><br /></p><p>But it is acid, and will alter the surface of your coin.</p><p><br /></p><p>Collectors of ancients frequently use olive oil to clean centuries of crud from their coins, but ancients and moderns are two entirely different types of collectibles.&nbsp; &quot;Cleaning&quot; is not a four-letter word in the field of ancients.</p><p><br /></p><p>If it really has grease on it, a quick swish in pure acetone (not acetone based nail polish remover), followed by a rinse in de-ionized or distilled water, will take it off.[/QUOTE]</p><p><br /></p>

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