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<p>[QUOTE=&quot;medoraman, post: 1104480, member: 26302&quot;]The only completely safe thing you can do is to soak them in distilled water. Distilled water has had its minerals removed, so chemically it is very attractive to many atoms, and they will leave your coin and dissolve into the water. If after a day the water becomes colored it means it is working and you change the water. You can do this many days in a row. When you are done make sure you take the coins out and pat dry them with a cotton towel.</p><p><br /></p><p>Slightly more aggresive would be to brush them gently while in the distilled water with a hard toothbrush to loosen up the corrosion. That is what you are most likely dealing with, and sorry to say you will probably be looking at damaged coins wehn you are through.[/QUOTE]</p><p><br /></p>

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