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<p>[QUOTE=&quot;Derry, post: 2241063, member: 74129&quot;]most important is your ambient air composition.&nbsp; ozone,(0-3) and sulfur compounds are big offenders.&nbsp; </p><p><br /></p><p>&nbsp;&nbsp; &nbsp; when i was a kid i used to strip problem wheats with ketchup and retone them with PURE oxygen, which produced an absolutely undetectably natural brown in just a few minutes.</p><p>&nbsp;&nbsp;&nbsp; </p><p>&nbsp;&nbsp; &nbsp; i have a wayte-raymond cent album pages from &#039;34 to &#039;60 that have plastic slide covers and the coins were clearly full red gems when inserted.&nbsp; (i&#039;ll post a shot when i get it together.)&nbsp; anyway, they have incredible iridescent toning that could in no way be considered either red or brown.&nbsp; they&#039;re just stunning and many are flawless.&nbsp; (i believe they should remain in their album home of 80 years.&nbsp; i don&#039;t want to touch them.)&nbsp; does anyone know whether it&#039;s the plastic or the cardboard that contributes to the characteristic toning these albums produce?&nbsp; i scored them on ebay 15 years ago and don&#039;t know where they spent their time before that.&nbsp; the toning takes a long time, though, since some of the later ones (&#039;50&#039;s) are still nearly full red.</p><p>&nbsp;&nbsp;&nbsp; </p><p>&nbsp;&nbsp; &nbsp; 2x2s work best to prevent toning for all coins.&nbsp; i have a &#039;60 proof cent that&#039;s been in a 2x2 for 54 years and looks like it was minted yesterday.&nbsp; </p><p><br /></p><p>Derry[/QUOTE]</p><p><br /></p>

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