Description:Johnny Evers 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, "John J. Evers" rating 8-8/9 out of 10. Hint of light toning with no mentionable wear. Deceptively scarce in this format with this being one of (3) or (4) such pieces we have seen. Includes auction LOA from JSA: Sig. NM, Cover EX/MT