Description:Steve Carlton single signed game used baseball from record breaking game. Lightly toned Feeney NL ball signed by Carlton on the sweet spot. Side panel has a period notation, "Steve Carlton 268th strike-out tied Bunning 72". Obtained by Bob Bartosz personally at the game in 1972. Desirable vintage playing career Carlton single signed ball with special event provenance. Includes LOA from PSA/DNA J.Spence-S.Grad and letter of provenance from Bob Bartosz: EX