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<p>[QUOTE=&quot;Aaron Apfel, post: 4426170, member: 67415&quot;]Thanks for the info, I will test the coins with this method. Do I get the coins wet with distilled water or does the water type not matter?</p><p><br /></p><p>Also, I just found another coin which definitely has BD. It had a green powdery substance concentrated in one spot and came away very easily. Although I remember this coin was badly damaged in this spot, it looks like the BD has made it worse letting it sit all this time. I&#039;ve attached a photo with before and after I scraped away the BD with a closeup up of the green powder.</p><p><br /></p><p>Could you describe the process to get rid of the BD with distilled water? Luckily this isn&#039;t a valuable coin, but hopefully I can save it from getting worse.[/QUOTE]</p><p><br /></p>

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