This baseball has been personally hand-signed by Don Mattingly with the inscription “Donnie Baseball.” It has been obtained under the auspices of the MLB Authentication Program and can be verified by its numbered hologram at MLB.Com. It also comes with a tamper-evident hologram from Steiner Sports. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud. Made in the USA Personally Autographed by Don Mattingly Includes tamper-evident hologram to ensure authenticity Officially licensed