Baked Alaskan: No!! Don't cut them up! They are worth much more together! You do have a rare find. May I ask the circumstances of how you came across this find?
Also, let me know what kind of cards they are (company: Fleer Ultra, Upper Deck, Stadium Club, etc.) How big is the sheet, 5x6?
I can pass this info a long to a friend of mine and either he or someone he knows should know...