This jersey has been personally hand-signed by Pete Alonso. It has been obtained under the auspices of the Major League Baseball Authentication Program and can be verified by its numbered hologram at MLB.com. 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. Made in the USA. Personally Autographed by Pete Alonso. Fanatics Authentic Presented by Mounted Memories. Includes tamper-evident hologram to ensure authenticity. Officially licensed. This product is guaranteed authentic and includes a Fanatics Certificate of Authenticity and an accompanying tamper-evident Fanatics Hologram.