My guess would be that the protection isn't as good in the anacs slab as the pcgs slab, or the new ngc slab. If you see the way the ANACS slabs are fastened together, it "seems" that air can make it's way into that holder more easily than the pcgs or ngc slabs. I have absolutely zero scientific data to support my opinion, but I'll stick to it, unless someone comes up with something better.
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I have absolutely zero scientific data to support my opinion, but I'll stick to it, unless someone comes up with something better.
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