Mark McGwire Autographed MLB Signed Baseball 1987 AL ROY JSA COA With UV Display Case
Mark McGwire has autographed this official baseball and written 87 AL ROY for winning the 1987 AL Rookie of the Year. Autograph was witnessed and authenticated by James Spence Authentication (JSA). Comes with their authenticity hologram on item and COA with same # verified on their site. A UV display case is also included.
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