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<p>[QUOTE=&quot;Shwikman, post: 594739, member: 10115&quot;]I have some old ones and they’re pretty impressive, the problem is the seals they used in some of them must have some alloy(copper maybe?)in them. A couple of them are starting to turn green on the back and it looks like it may be effecting the paper in one. I’m afraid to do anything to arrest or reduce the process as not to damage the paper. It seems tricky.[/QUOTE]</p><p><br /></p>

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