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<p>[QUOTE=&quot;Publius2, post: 7836077, member: 105571&quot;]I imagine this post will generate some potentially vociferous responses.&nbsp;&nbsp; Know in advance that I will not respond to any of them unless they are based upon evidence.</p><p><br /></p><p>I don&#039;t know if these sheets are PVC-free and frankly I don&#039;t care.&nbsp; As far as I have been able to determine, the only time it matters if something contains PVC is if it is in contact with the coin.&nbsp; Now, I could be way off-base here but I haven&#039;t seen any evidence presented anywhere that PVC in the vicinity but not in contact has any deleterious effects.&nbsp; And that contact needs to be for an extended period of time, as measured in years as opposed to weeks.&nbsp; Keep a coin in a new PVC flip for six months, I&#039;d say everything&#039;s OK.&nbsp; Keep it in there for 20 years, I&#039;d say you&#039;re going to have problems.</p><p><br /></p><p>Could outgassing of chlorides in, for example, a safe or safety deposit box, produce a negative consequence?&nbsp; I don&#039;t know, but again I haven&#039;t seen any evidence - just supposition.</p><p><br /></p><p>Assuming your coin is in a non-PVC flip and the flip is in a 3-ring binder sheet for holding 2x2s and the binder and sheet has PVC among its constituent parts:&nbsp; If/when the PVC degrades over 5 or 10 or 20 years, how will it damage your coin?&nbsp; I don&#039;t know but it doesn&#039;t seem to me that it would.&nbsp; I have not seen any PVC coin damage other than the typical greenish sludge and pitting that accumulates on the coin&#039;s surface as the PVC degrades onto the coin&#039;s surface.&nbsp; I have not seen (but that doesn&#039;t mean it doesn&#039;t exist) any damage caused by non-contact exposure.</p><p><br /></p><p>I guess you can buy non-PVC 3-ring binders but again, I don&#039;t see what you are really gaining by that significant increased expenditure. </p><p><br /></p><p>If someone has evidence, not just conjecture, I would be happy to change my mind.</p><p><br /></p><p>Of course, if you subscribe to the precautionary principle then only buy non-PVC materials.&nbsp; And while you&#039;re at it, make sure that all paper, cardboard and wood products have non-acid, non-chloride constituents and are archive quality.[/QUOTE]</p><p><br /></p>

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