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<p>[QUOTE=&quot;GDJMSP, post: 2692875, member: 112&quot;]There is another point to consider. It is well known that cardboard 2x2s have their downsides. The possibility of staple scratches, poor protection due to the thinness of the mylar, cardboard dust, and the toning effects of the cardboard on the coins due to out-gassing as the cardboard decays.</p><p><br /></p><p>It is this last one to which I refer. Cardboard decays at a set rate just like everything else. But as time passes on the amount of gas released decreases, the older the cardboard the less gas. So, by replacing the 2x2s you start the process all over again exposing the coins to newer cardboard that is putting of even more gas. And even if you follow the other steps for proper storage, what I mention cannot be negated. So it is not only possible, it is likely that you would be doing more harm by replacing the 2x2s than you would if you just left them alone.[/QUOTE]</p><p><br /></p>

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