A New York Yankees Mr. October Baseball Hall of Fame Cachet Envelope hand signed by Reggie Jackson. The signature and item are in excellent condition. The envelope measures 16.5cm x 9.2cm. Reggie is a former professional baseball player, a 14-time All-Star, 5-time World Series Champion, and the 1973 AL MVP. He finished his career with 563 homeruns and an induction into the Hall of Fame in 1993. AUTHENTICATION: The item is accompanied by a JSA Certificate of Authenticity - JSA Serial Numbered and Databased Hologram