Ken Griffey Jr. Autographed Official MLB Baseball Seattle Mariners "MLB Debut 4-3-89" Beckett BAS Witness Stock #212459 MYS_run6-2 It has been authenticated by

It has been authenticated by PSA/DNA and comes with their sticker and matching full page certificate of authenticity

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Every autographed jersey comes with a certificate of authenticity to verify the signature's legitimacy

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Ken Griffey Jr. Autographed Official MLB Baseball Seattle Mariners "MLB Debut 4-3-89" Beckett BAS Witness Stock #212459 MYS_run6-2 It has been authenticated byThis is an Official MLB Baseball that has been hand signed by Ken Griffey Jr. This item was inscribed "MLB Debut 4 3 89." This item has been witnessed and certified authentic by Beckett Authentication (BAS) and comes with their tamper proof witness sticker. Beckett Authentication has recently changed their physical certificate card policy where they no longer match their tamper proof sticker with a physical certificate. A certificate can be printed on