I keep all my cards ungraded cards in glassine envelopes.
I envision a day in 10 or 20 years where sportscard collectors become horrified to find out that the chemicals in the hard plastic slabs actually breakdown and cause damage to the card stock.
These plastic holders, likely made in China, from a long list of chemicals, have only been around for 10 years or so we really don't know the long term effects.
I hope none of you high end graded speciman collectors, lose the ability to have a peacefull sleep tonight. These were not my intentions.
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