This is an Official Major League Baseball that Oscar signed at a private signing. This item comes with a JSA SIGNATURE DEBUT COA. Signature Debut 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 Debut Signature of a player should make your collection very unique. JSA is a leading authenticator in our industry! Illinois residents must add 7% sales tax.