An Official Major League Baseball (Selig) that has been signed by Roy Halladay to commemorate his 2010 perfect game. Numbered 22 of 27, the pitcher signed the ball in blue ink and added the inscriptions, "P.6. 5-29-2010" and "27 UP 27 DOWN." The verified ball is in never-used condition and also features hologram stickers from Major League Baseball and Steiner Sports. Halladay, a two-time Cy Young Award winner and one of the best pitchers of his generation was tragically killed in a plane crash in 2017. He was posthumously inducted into the Baseball Hall of Fame in 2019 on the first ballot.