2x2-5/8". The 1951 Topps Red Backs baseball set consist of 52 cards. The Red Backs were created as a playing card game with numerous game situations and plays printed on the front for playing a game of baseball. The Red Back set was sold with a foldout paper game poster in a plastic bag for .29¢.

Warren Edward Spahn was an American professional baseball pitcher who played 21 seasons in Major League Baseball (MLB). A left-handed pitcher, Spahn played in 1942 and then from 1946 until 1965, most notably for the Boston Braves, who became the Milwaukee Braves after the team moved west before the 1953 season. His baseball career was interrupted by his military service in the United States Army during World War II. A few of his many career accomplishments include being a 17 time All-Star, A Cy Young Award and World Series Championship in 1957, led the NL in strikeouts four times and threw two career No-Hitters. Warren Spahn was inducted into the National Baseball Hall Of Fame in 1973. The autograph on this card is bold with excellent placement along the bottom.