1.5x2-5/8". 300+ card set. The 1911 Sporting Life (M116) Baseball card set was distributed to subscribers of the popular magazine "Sporting Life", the primary competitor of the well-circulated "Sporting News."  The cards feature full-color likenesses of each player centered within a white border with the player's surname, the team's city and league printed at the bottom. The unnumbered cards were sold by mail in 12-card lots issued in 24 series, with the final three series being the rarest. This final group of 72 cards has "Over 300 subjects" printed on the reverse, while the majority of the set have various ads from the weekly paper on the backs. Blue-background cards are scarcer than the pastel or other backgrounds. The third series of the 1911 Sporting Life cards reveal minor differences in sizing, color and portrait styles.

Hugh Duffy (1866-1954) was an American outfielder and manager in Major League Baseball. He was a player or player-manager for the Chicago White Stockings, Chicago Pirates, Boston Reds, Boston Beaneaters, Milwaukee Brewers and Philadelphia Phillies between 1888 and 1906. He had his best years with the Beaneaters, including the 1894 season, when he set the National League single-season record for batting average (.440), a record that has stood for over a century. He also managed the Chicago White Sox and Boston Red Sox and spent several seasons coaching in collegiate baseball and in the minor leagues. Later in life, he spent many years as a scout for the Red Sox. In 1945, Duffy was elected to the Baseball Hall of Fame.