First day cover honoring the centennial of baseball, postmarked at Cooperstown on June 12, 1939, signed in blue ballpoint, "Dear Mr. O. H., my autograph, Elmer Flick, Elmer Flick." In fine condition. These three-cent postage stamps honoring baseball's 100th anniversary were issued in conjunction with the dedication and opening of the National Baseball Hall of Fame in Cooperstown, New York, on June 12, 1939. An able hitter and speedster on the basepaths, Flick was elected to the Baseball Hall of Fame in 1963 (d. 1971). Encapsulated in a PSA/DNA authentication holder.
