[Tomman1961]

I remember in the 1980's there was a scare of PVC added to plastic pages. The PVC made them softer, but in time the PVC will turn to a soft,greasy texture and ruin the cards. Being in the "plastic" business, I have PVC samples in my office from 1970. And, yes, they are a gooey mess now. So are cards in older pages in trouble?