A young Reggie Jackson's arms look positively massive in this 1972 Pro Star Promotions card, as he loads to unleash another massive swing on a defenseless fastball. Jackson at 26 was already a superstar, having hit 37 home runs by the All-Star break in 1969, and in 1972 would win his first World Series, his Oakland A's defeating the Cincinnati Reds in 7 games.