This helmet has been personally hand-signed by Don Mattingly. It has been obtained under the auspices of the MLB Authentication Program and can be
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Don Mattingly Autographed Jerseys, Signed Don Mattingly Inscripted
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Don Mattingly New York Yankees Autographed Navy Mitchell & Ness Cooperstown Collection Replica Batting Practice Jersey
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Don Mattingly New York Yankees MLB Autographed Jerseys