[court82]

I have a few unopened boxes of cards, and I can't figure out if I would be better off opening them and checking the cards inside or leaving them sealed. These are the sealed boxes I have:
1998 Topps Finest Series 1 MLB
1993-94 SkyBox Premium Series 2 NBA
1991 Fleer Baseball
1991 Upper Deck Baseball Complete Set

Does anyone know if I should open these or leave them sealed? Or a place where I can find that information?

Thank You!