Quote:
Originally Posted by packs
Yeah what's the worry exactly? Has there been any instance of a card being damaged while inside of a holder by the holder?
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As the article I linked states:
"The practice of slabbing began recently enough that there is not a long enough track record to be certain that damage will not result over time."
Plastics have been seen to destroy other artifacts over a long period of time. At this point the concern comes from the uncertainty of these plastics.