Three years removed from the "Impossible Dream", Yaz donned this navy blue helmet while putting up the best batting numbers of his career. The "Pro KM Cap" has a handpainted red and white Boston logo on front and his number "8" in red marker on athletic tape on back." [Size] 7" sticker on inside is marked "Yaz" in black ink. Helmet and brown leather padding display great use. Included is original LOA written by KM Pro to a fellow collector in 1971.