Attractive card of the touch Bears linebacker and sometime actor.  The Philadelphia Gum company, in association with Sports Picture Cards Enterprises of New York, held the exclusive trading card license with the NFL from 1964-67.  Considered by many to be the most scarce of the Philadelphia football issues, the 1966 sets suffered from significant centering and cutting issues, making true high-grade cards difficult to obtain.  Card #31 of Dick Butkus is without doubt the key card of the issue, along with the rookie cards of Gale Sayers and Bob Hayes.  This particular example is extremely sharp and clean, the ubiquitous centering problem the primary culprit keeping the card from a higher holder.