John "Stuffy" McInnis played for the Philadelphia Athletics (1909–1917), Boston Red Sox (1918–1921), Cleveland Indians (1922), Boston Braves (1923–1924), Pittsburgh Pirates (1925–1926) and Philadelphia Phillies (1927) where he served as player/manager in his final season.

McInnis was the first baseman in Connie Mack's famed $100,000 Infield, winning the World Series in 1911 and 1913. McInnis won another World Series with the 1918 Red Sox, and one final World Series with the 1925 Pirates. McInnis was a career .307 hitter with 2,405 career hits, but he was an especially solid defensive player.

For decades, he held major league fielding records for first basemen over one season. In 1921, he played in 152 games with the Red Sox and committed only one error in 1,651 chances for a .9993 mark, and his 1,300 errorless chances, also represented a season mark. Between May 31, 1921, and June 2, 1922, McInnis set a third record with 1,700 chances without an error over the course of 163 games.

McInnis passed away in February of 1960, making his signature a tough one. Even harder still is finding an example when he signed his full name and nickname.

Offered here is a signed 3x5" index card upon which he writes exactly that - John "Stuffy" McInnis - in beautiful cursive handwriting with black ink, adding a decorative underline below. The signature has been Authenticated by PSA/DNA.