STEVEN MATZ SIGNED BASEBALL
Offered here is an Official Major League Baseball which has been hand-signed in blue ink pen by Steven Matz (Mets). The autograph includes an official James Spence Authentication (JSA) "Signature Debut" serial number and matching COA. "Signature Debut" is the autographed memorabilia equivalent to a rookie card. The JSA definition of a "Signature Debut" is as follows: "Any item that is autographed and received by JSA prior to the last game of the signer's official rookie season.
Authentication: Includes an attached JSA s/n #SD10389 and matching COA card.
