Bo, Schembechler Signed 11/25/89 Michigan Ticket Stub Last Home Game PSA 42635 The number in the listing title is just an inventory sku for our records and is not the authentication number. This is the exact item that you will receive so please see pictures for condition. This is a ticket stub that has been personally autographed by Bo Schembechler. This has been professionally slabbed by Professional Sports Authentication (PSA) and includes a certificate of authenticity from Denver Autographs.