2.5x3.5". Because some of the cards were redeemable either alone or in combination for cash awards, and thus were issued in lesser quantities, completion of this game issue was difficult from day 1. Fifty different players are known in the issue, along with a number of variations. The majority of the cards can be found with card backs either explaining the game rules or pictureing a pitcher throwing to a batter. The cards were issued in two-card panels, designed to be separated into a pair of cards. For lack of an MLB license, the color player photos at center have the uniform logos removed. Printed at top is the face value of the particular card, while the player's name, team and league are printed in a white circle at bottom-right. American Leaguers' cards are bordered in red, while the Natonal League cards have blue borders.

Roberto Enrique Clemente Walker was a Puerto Rican professional baseball right fielder who played 18 seasons in Major League Baseball (MLB) for the Pittsburgh Pirates. After his early death, he was posthumously inducted into the National Baseball Hall of Fame in 1973, becoming both the first Caribbean and the first Latin-American player to be enshrined. Because he died at a young age and had such a historic career, the Hall of Fame changed its rules of eligibility. As an alternative to a player having to be retired for five years before eligibility, a player who has been deceased for at least six months is eligible for entry. Some of his many career highlights include being a 15 time All-Star, a 12 time Gold Glove winner, two time World Series Champion and an NL MVP in 1966.