1967 Topps 3rd Series Checklist (Willie Mays)

If you're going to get a checklist in your pack of cards, it may as well be one with a floating head of Giants superstar Willie Mays.

What I like the most about this card is that it is used. Someone in 1967 took the time to look through their cards and put a check next to those cards he/she was lucky enough to have.

Without an Internet, these checklists were essential in keeping track of what you had, and more importantly, what you didn't.

How else were you supposed to know that Ron Swoboda appeared on card #264?