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<p>[QUOTE=&quot;GDJMSP, post: 488920, member: 112&quot;]Conder101 can probably provide a better answer, but if I recall PCGS uses some kind of oil either as part of the process for sealing the slabs or to aid in pushing the 2 halves of the slab together - can&#039;t remember exactly. But I do know that it is not uncommon to see a thin film of oil in spots inside the PCGS slabs.[/QUOTE]</p><p><br /></p>

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