This is a Full Size Bat (34" long) that Mike signed at our private signing. We show a picture of Mike from our signing, you will also receive this proof picture. This item comes with a PSA/DNA ROOKIE GRAPH COA. ROOKIE GRAPH COA'S are very unique, it guarantees that the signature was signed and authenticated prior to the players 1st game of his second season. Having a ROOKIE BALL of a player should make your collection very unique. PSA is the leading authenticator in our industry! Illinois residents must add 7% sales tax.