This is an Official Wilson Baseball that has been hand signed by 24 members of the 1983 Arizona State. Some of the 24 members of the 1983 Arizona State Men's Baseball Team that signed this baseball are: Barry Bonds (Pre-Rookie), Doug Henry, Royce Clayton, and Mike Deveraux. There is an imperfection in the signature as shown. There are marks on the item as shown. This item has been certified authentic by Beckett Authentication (BAS) and comes with their tamper-proof sticker and matching full-page certificate of authenticity.