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<p>[QUOTE=&quot;desertgem, post: 424820, member: 15199&quot;]Air-tites are nice holders as long as you really don&#039;t believe they are air-tight. Try putting a drop of colored ink in the center of one and closing it tight and immersing it into a clear container of water. See how long it takes the water to become colored. At first, I thought maybe I got ink on the outside of it, but several repeats with careful cleaning of the outside had the same result. If ink molecules can leak out, air and its components can leak in.</p><p><br /></p><p>Intercept shield products are a finite layer and thus finite protection as you can&#039;t regenerate their activity. The IS site says something about 10 yrs, which I assume is when you have to replace them. If you really want that protection, it is much less expensive to place the coin into a polyethylene sheath and put into a safe non pvc</p><p>flip. If that is not enough, use a heat sealer to seal the flip to keep out air and put into an IS brand 2x2 box. That should cost less than 20 cents a coin at online prices and provide enough protection unless you store them in a coal driven locomotive. <img src="styles/default/xenforo/clear.png" class="mceSmilieSprite mceSmilie1" alt=":)" unselectable="on" unselectable="on" /></p><p><br /></p><p>Human handling of coins causes more problems on the average than the environment.</p><p>The great collections of the early years weren&#039;t in this type of protection and yet most are magnificent, because their owners were very picky about their handling.</p><p><br /></p><p>I used to think that mylar lined 2x2 were sufficient, but after 20 years, I would like to show you the distinctive &quot;4-corner&quot; toning from staples on many of my morgans.</p><p><br /></p><p><br /></p><p>Jim[/QUOTE]</p><p><br /></p>

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