This 16" x 20" photograph has been personally hand-signed by these members of the 2013 World Series Champions: David Ortiz, Dustin Pedroia, Clay Buchholz, Xander Bogaerts, John Farrell, Mike Napoli, Koji Uehara, Jake Peavy, Junichi Tazawa, Will Middlebrooks, Daniel Nava, Mike Carp, Stephen Drew, Franklin Morales, Shane Victorino, Felix Dubront, Jarrod Saltalamacchia, David Ross, John Lackey, and Brandon Workman. 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 an individually numbered, tamper evident hologram from Fanatics Authentic. To ensure authenticity, the hologram can be reviewed online. This process helps to ensure that the product purchased is authentic and eliminates any possibility of duplication or fraud.