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<p>[QUOTE=&quot;Curtis, post: 24717923, member: 26430&quot;]The baking soda part is not a good idea at all. </p><p><br /></p><p>(Except as part of cleaning a coin that has stubborn encrustations, and even then you have to be careful. Too much or too long and the patina will be damaged.)[/QUOTE]</p><p><br /></p>

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