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<p>[QUOTE=&quot;CentDime, post: 387864, member: 7297&quot;]I will give you a couple of ideas. Remember though with each of these the last step is always a distilled water rinse.</p><p><br /></p><p>The first attempt at removing the dirt might be a simple water stream to dislodge it. This could be from a waterpick or kitchen faucet spray while carefully holding the coin by its edge. Water does not harm gold so this should be safe to do unless you use too powerful of a spray. Rinse with distilled water.</p><p><br /></p><p>If that doesn&#039;t work then a soak and spray might be the next step. The hard part is finding a way to soak without having the coin touch a surface. You can hold the coin in water if you have the time, if it is a very valuable coin I would be careful doing this. Maybe place it inside one of the coin flips and fill with water. Then try to spray it away after a soak and risnse with distilled water.</p><p><br /></p><p>The last somewhat safe attempt is acetone but it will not remove general dirt, only oil or plastic types of contamination. Also it is dangerous to use and often contaminated itself so never allow it to dry on the coin. Rinse in distilled water right after exposing to acetone and use at least two rinses in different cointainers, the more the better.</p><p><br /></p><p>You did mention soapy water and I have never tried that as I would be afraid that some soap residue would remain after even a couple of rinses and would dry on the coin. The last thing you want is for the coin to be worse off that you started. Anyway these are only suggestions and should be done carefully if attempted.</p><p><br /></p><p>Also I would call these attempts more at coin conservation and not cleaning as you are simply trying to bring the coin to its original surface and not remove anything to alter the coin. If anyone disagrees though feel free the critique this but I have used these techniques and think they are safe if done carefully [and especially using acetone only outside of a house or building].[/QUOTE]</p><p><br /></p>

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