Yankees great Don Larsen has signed this New York Yankees 1956 Pinstripe Jersey and inscribed it WSPG 10-8-56-Don Larsens baseball career can be defined by the historic events that took place on October 8 1956. On that day Larsen became the first and only player in MLB history to throw a perfect game during World Series Play. Perfection took just 97 pitches and only went to a three-ball count once to beat the Brooklyn Dodgers in Game 5 of the World Series. This Don Larsen autograph is Guaranteed Authentic by Steiner Sports and include a Steiner Sports Certificate of Authenticity and an accompanying tamper-proof Steiner Hologram. The Steiner Seal Means Its Real.