Ken Holtzman had three different cards in the 1968 Topps baseball set. His base player card was #60....shown here in PSA 9 - Mint condition.
Holtzman was also pictured on one of the set checklists (card #356). The checklist had two variations. The location of the player's head within the circle created the variation. This is a card that I have not yet collected in a graded version.
The third Holtzman card was #380 which was his All-Star card. This is shown in this post as a PSA 8 - NM-MT version.
Holtzman was drafted by the Cubs in the 1965 amatuer draft. He debuted in September 1965 and was a solid pitcher for the Cubs through 1971. He twice won 17 games as a Cub. Holtzman was traded to the A's for Rick Monday in November of 1971. Holtzman returned to the Cubs in June 1978 and completed his career in 1979 in a Cubs uniform. Holtzman won 80 games as a Cub during 9 seasons.