Mine are, mostly, Ultra Pro holders and are kept in fireproof boxes, so it can't be the sunlight - the holders for my T206's (early/mid 90's) aren't turning brown, but the ones holding the Playballs (mid to late 90's) seem to be the worst. Maybe a change in the manufacturing process? My newer holders also don't have the tinting issue.
Last edited by judsonhamlin; 10-18-2010 at 12:22 PM.
|