[wastewater]

I imagine I am similar to many people on the board in that I have been through a lot of different storage techniques and manufacturers over the years. I use a lot of top loaders and have dumped a number that have yellowed over the years but was wondering about the safety of penny sleeves that may be aging. Does anyone know if penny sleeves have always been PVC free/archival safe and are the ones I obtained circa 1990 OK? The cards I have from that era appear fine but I want to make sure that there won't be any issues in the future.

Thanks