Description:Ty Cobb autographed Centennial of Baseball cover. Vintage postal cover commemorating the 1939 Centennial with accompanying First Day of Issue stamp/cancellation has been signed in fountain pen, "Ty Cobb" rating 8-8/9 out of 10. Cobb's position was incorrectly typed below as "Left Field" and corrected the error writing "center." Hint of light toning and small area of blemish where an address label was partially removed. Includes auction LOA from JSA: Sig. NM, Cover EX