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<p>[QUOTE=&quot;Dynoking, post: 7497206, member: 81795&quot;]I’ve tried on IHC’s. It did help (but not fully remove) on a few of them. I used coins that had nothing to loose. I tried it to test, learn, practice. It works best when the “crud” is caked dirt. Repeated attempts where necessary to make a difference. I’ll assume the hot water was used after the freezer. Did you try repeating the process? I think think a longer soak before freezing and repetition would make for better results. I was attracted to the process because it seemed non destructive to the coin. The problem is with what the crud did to coin prior to removal attempts.[/QUOTE]</p><p><br /></p>

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