This baseball has been personally hand-signed by Mark McGwire with the inscription "HR DERBY CHAMP." It has been obtained under the auspices of the Major League Baseball Authentication Program and can be verified by its numbered hologram at MLB It also comes with an individual numbered, tamper-evident hologram from Fanatics Authentic. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud.
*Due to quantity levels, we do at times list a stock image of the product. This is done to standardize and expedite the listing process and only applies for merchandise that is comparably identical*| Team | Oakland Athletics |
| Player | Mark McGwire |
| Authentication | Major League Baseball Authentication,Fanatics Authentic |
| UPC |