Ronald Acuna Jr has autographed this official baseball and written 2023 NL MVP and 40/70 for having 40 or more home runs and 70 or more stolen bases in same season. First player ever to do that. Autograph was witnessed and authenticated by Beckett Authentication Services (BAS). Item comes with their unique authenticity sticker # on the item. Simply scan the QR code with your phone to verify on their site. A display case is also included.