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<p>[QUOTE=&quot;Publius2, post: 7764140, member: 105571&quot;]I doubt it was the 2x2 cardboard holders that caused your silver coins to spot.&nbsp; It was more likely the environment the coins were in.&nbsp; If the humidity is not controlled, then silver coins will corrode and I&#039;m using the worst possible word here.&nbsp; But toning, tarnishing, corroding are all the same thing.</p><p><br /></p><p>I don&#039;t favor mylar/PVC flips for all the reasons mentioned in previous threads.&nbsp; I do use 2x2 cardboard flips for raw coins.&nbsp; If the coins are circulated I just use a standard cardboard flip stapled with a flat-clinch stapler.&nbsp; If the coin is mint state or proof, I use the 2x2 cardboard flip that is self-sealing (brand Supersafe).&nbsp; Now, all my valuable coins in 2x2s are stored in 3-ring binders using the 2x2 pocketed pages.&nbsp; Each page is separated from adjacent pages and the front and back binder covers using a 8-1/2 x 11 sheet of heavy artist paper that is no-acid paper and thus no sulfur.&nbsp; This keeps the coins pretty safe from damage due to rubbing.&nbsp; If I was keeping them in a 2x2 storage box, I would use an unused and unstapled 2x2 to separate each coin.</p><p><br /></p><p>For raw coins of value that are going into a collection of mostly slabbed coins, I use one of several brands of &quot;make your own slab&quot; that are available wherever coin supplies are sold.</p><p><br /></p><p>Of course, you can use the &quot;Air-Tite&quot; - type capsules but I think you said you don&#039;t want the expense of those.</p><p><br /></p><p>Finally, wherever you keep your coins, I recommend you control the humidity.&nbsp; I use dessicant packs that can be recharged by plugging them into the wall outlet.&nbsp; Keep your coins in something where the environment can be controlled and with the dessicant packs and you will have little to no problem for many years.&nbsp; The container could be a safe or even a metal ammunition box.[/QUOTE]</p><p><br /></p>

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