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<p>[QUOTE=&quot;cpm9ball, post: 5372663, member: 24633&quot;]Like I said in Post #5, those cases aren&#039;t that air tight. Even the airtites that the Mint uses aren&#039;t all that protective. Below is a Bicentennial silver proof medal that I acquired many years ago in a bulk purchase. It was terribly encrusted with an ugly haze. I submitted it to NCS with the hope that conservation would restore it to its original condition. As you can see from the <u>before and after</u> photos, the conservation wasn&#039;t 100% successful.</p><p><br /></p><p><b><u>Before</u></b></p><p><b><u>[ATTACH=full]1229336[/ATTACH]</u></b></p><p><b><u>[ATTACH=full]1229337[/ATTACH]</u></b></p><p><b><u><br /></u></b></p><p><b><u>After</u></b></p><p><b><u>[ATTACH=full]1229338[/ATTACH]</u></b></p><p><b><u>[ATTACH=full]1229339[/ATTACH]</u></b></p><p><b><u></u></b>[/QUOTE]</p><p><br /></p>

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