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<p>[QUOTE=&quot;coin_nut, post: 3726844, member: 80148&quot;]I wonder if you could thermally shock the coin to loosen deposits? I am thinking of freezing a coin then dropping it in boiling water, or possibly heating the coin to about 150F then dropping it in ice water. I will experiment on some no value coins and see what happens.[/QUOTE]</p><p><br /></p>

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