Yankees legends Mariano Rivera and Jorge Posada have personally hand-signed this Jorge Giving Baseball to Mariano 16x20 Metallic Photo signed in black-Mariano Rivera will go down as the greatest closer in Major League history owning the records for most postseason saves regular season saves and lowest post season E.R.A. During Riveras and Posadas career as Yankees they helped lead the Bombers to five world Series championships. These autographs are Guaranteed Authentic by Steiner Sports and include a Steiner Sports Certificate of Authenticity and an accompanying tamper-proof Steiner Hologram. The Steiner Seal Means Its Real. Jorge Posada and Mariano Rivera Dual-Signed 16x20 PhotoSigned in Black100% Guaranteed AuthenticIncludes Steiner Sports Certificate of AuthenticityFeatures Tamper-Evident Steiner HologramWould make a perfect gift!