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<p>[QUOTE=&quot;GDJMSP, post: 1517520, member: 112&quot;]Amanda - </p><p><br /></p><p>There are many things involved in the proper storage of coins, but it all starts with what kind of coin holder you are going to use. The holder needs to be made of inert materials of course, and all of the hard plastic holders are made of inert materials. And the holder should restrict the flow of air as much as possible since air is the coin&#039;s worst enemy if you wish to prevent toning as much as possible. Toning is oxidation, and oxidation cannot occur without oxygen. So if you restrict the air flow as much as possible you restrict oxidation as much as possible. You cannot stop it completely, so you slow it down as much as you can.</p><p><br /></p><p>No coin holder is truly airtight - none of them. But some do a much better job of restricting air flow than others. About the best I know of are the Air-Tite holders. The snap-lock type of holders that resemble either a slab or a 2x2 do not seal as well when the 2 pieces are joined together. Thus they allow more air to get to the coin than Air-Tites do. This is even true of the Intercept Shield holders, but the IS holders have the additional advantage of the anti-toning materials. So it is usually believed that the IS holders are the best you can get.</p><p><br /></p><p>The other thing that a coin holder needs to do is protect the coin from possible outside damage. This means that the holder needs to be made of a hard material, like acrylic, so nothing can inadvertently scratch or ding the coin. The hard plastic holders do this.</p><p><br /></p><p>After the coin holder is decided upon that is when you must take the steps necessary to address environmental conditions like maintaining proper &amp; consistent temperature, low humidity, air flow, and darkness.</p><p><br /></p><p>That&#039;s basically it when it comes to proper coin storage. Now if you know of something that will do a better job than that system - tell us what it is.[/QUOTE]</p><p><br /></p>

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