Spectacular first day cover celebrating the 100th Anniversary of baseball with the Centennial graphic illustrating the newly-christened Baseball Hall of Fame and Doubleday Field in Cooperstown as well as a bust of Abner Doubleday. Hall of Famer Johnny Evers not yet inducted in 1939 signed the cover in bold black fountain pen underneath the postage stamp. A fantastic display beautiful and rare in every regard. Full LOA from James Spence Authentication.