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<p>[QUOTE=&quot;rysherms, post: 1769556, member: 46631&quot;]also, the air that is allowed into the bag EVERY TIME IT IS OPENED is not &quot;intercepted&quot;. you are locking the air in with it. its not a sponge. it is a barrier at best. and only on one side of the bag as one side is clear!</p><p>&nbsp;</p><p>Chris I would be very careful marketing this product. you are opening yourself up to a lawsuit when someone puts a expensive coin into it and it tones OR tarnishes and comes looking for the manufacturer to sue.</p><p>&nbsp;</p><p>i have to reiterate the fact that you do not understand what actually causes oxidation and tarnishing. &quot;intercepts harmful gases&quot; is a blanket term. your shirt absorbs harmful gases. your hair absorbs harmful gases. are these coin storage products???</p><p>&nbsp;</p><p>if you expose UV light to silver, iron, ANY metal except gold pretty much (and even gold in high enough intensities usually not found in nature) it will oxidize (barring a vacuum environment). meaning, it will tone.</p><p>&nbsp;</p><p>be careful bud. not trying to knock you or your product. its a good idea, it just doesn&#039;t work the way you think it does.[/QUOTE]</p><p><br /></p>

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