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<p>[QUOTE=&quot;rlm&#039;s cents, post: 1779912, member: 7957&quot;]Problem is most liquid also carry contaminants&nbsp; let alone that a lot will react with the coins themselves.&nbsp; That is the one thing a vacuum does absolutely NOT have or do.&nbsp; For all the things out there called &quot;hermetically sealed&quot;, how difficult can it really be to make something for a coin.&nbsp; And there are ways to coat things with glass.</p><p>&nbsp;</p><p>And, wiggam007, I do not think I am talking anything that impractical.&nbsp; Maybe not available for a $50 dollar coin, but I would guess it is there today for a $1000 dollar coin[/QUOTE]</p><p><br /></p>

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