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<p>[QUOTE="Bonedigger, post: 396318, member: 4367"]Never underestimate radical temperature changes. Get the coin about 500º F. in the oven then drop it into a bowel of ice water. It's very effective for ancients. The crud will pop right off.</p><p><br /></p><p>Ben[/QUOTE]</p><p><br /></p>
[QUOTE="Bonedigger, post: 396318, member: 4367"]Never underestimate radical temperature changes. Get the coin about 500º F. in the oven then drop it into a bowel of ice water. It's very effective for ancients. The crud will pop right off. Ben[/QUOTE]
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Cleaning tip needed
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