First day cover honoring the centennial of baseball, postmarked at Cooperstown on June 12, 1939, signed in blue ballpoint, "A. C. 'Dazzy' Vance." In fine condition, with a light handwritten address to the lower right. Accompanied by a full letter of authenticity from JSA. This three-cent postage stamp honoring baseball's 100th anniversary was issued in conjunction with the dedication and opening of the National Baseball Hall of Fame in Cooperstown, New York, on June 12, 1939. National League fireballer Dazzy Vance, who led the league in strikeouts for seven consecutive years during the 1920s, was elected to the Hall in 1955. Encapsulated in a PSA/DNA authentication holder.
