The background or border for the photos is Topps only psychedelic production in a base set in baseball. The base set includes standard posed photos of players and managers, photos of players and managers in action during games, and league leader cards with three players per card.
Since 1965, the Canadian candy company O-Pee-Chee produced virtually identical, but smaller, sets identical to the Topps issue of the same year. The Canadian printed cards tended to be printed on lighter grey cardstock and often included traded lines on the front of the cards. In 1972, due to Canadian law, the cards were modified to include both French and English text in which
case T.C.G was replaced by O.P.C. in the copyright line.