Four different styles exist. Ball boxes in sizes Junior, Regulation and Softball each contained five cards. A fourth version was a cardboard sleeve that held a bat and ball together. This version contained just two cards printed on the sleeve.
Chicago Cubs Checklist1978 Wiffle Ball Discs #9 Bill Buckner
1978 Wiffle Ball Discs #10 Ray Burris
1978 Wiffle Ball Discs #78 Manny Trillo