Message:

<p>[QUOTE=&quot;CamaroDMD, post: 1948682, member: 5233&quot;]It&#039;s not the same thing as being raw...however, the air that is currently within a given slab is not the same air that was in there when the slab was created.&nbsp; They are not air tight and thus &quot;gas&quot; can diffuse in and out of the slab.&nbsp; Yes, there is a degree or protection...far more than a raw coin, but they still get exposed to the environment.[/QUOTE]</p><p><br /></p>

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