18 Total Signatures: Buster Posey, Matt Cain, Jeff Samardzija, Hunter Pence, Matt Duffy, Denard Span, Gregor Blanco, Jarrett Parker, Mac Williamson, Santiago Casilla, Hunter Strickland, Grant Green, Kelby Tomlinson, Vin Mazzaro, Mike Broadway, Chris Heston, Cory Gearrin and Bruce Bochy

Autographed Item comes with a Certificate of Authenticity (COA) Card from Authenticated Ink

Certification Number A608103