This 16" x 20" photograph has been personally hand-signed by pete alonso. alonso added the inscription "back to back hr derby champ" & "2019 & 2020" to this framed photograph. 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.this is a 16" x 20" photograph framed to total dimensions of 20" x 24"