Collection: Baseball Signed Memorabilia

About This Item Hand-signed by New York Mets legend Mike Piazza Features the National Baseball Hall of Fame logo Authenticated by JSA (James Spence Authentication) Official size and weight collectible baseball

About This Item Hand-signed by New York Yankees legend Orlando "El Duque" Hernandez Features "1999 ALCS MVP" inscription Official World Series logo baseball Authenticated by JSA with a witnessed certificate of authenticity

About This Item Hand-signed by Hall of Fame catcher Mike Piazza Official 2000 World Series logo baseball Includes JSA (James Spence Authentication) Certificate of Authenticity A must-have for New York Mets fans and baseball history collectors

About This Item Hand-signed by Boston Red Sox players Roger Clemens, Bruce Hurst, Rich Gedman, and Marty Barrett Official Wilson brand baseball Includes JSA Certificate of Authenticity

About This Item Hand-signed by Hall of Famer Joe Torre Inscribed "2000 World Series Champs" Official Rawlings Major League 2000 World Series Baseball Includes JSA Witness Certificate of Authenticity

About This Item Hand-signed by New York Yankees prospect Spencer Jones Official Rawlings Major League Baseball (OML) Authenticated by Fanatics with a tamper-evident hologram and QR code Signed in blue ink

About This Item Hand-signed by New York Yankees star Jazz Chisholm Jr. Authentic Rawlings Major League Baseball mini batting helmet Beckett Witnessed Authentication includes a numbered hologram and QR code for verification Officially licensed MLB collectible

About This Item Hand-signed by New York Yankees legend Don Mattingly High-quality 8x10 action photograph Authenticated by Beckett Witnessed (BAS) Includes Beckett serial-numbered hologram and Certificate of Authenticity

About This Item Hand-signed by former Atlanta Braves pitcher John Rocker Features a bold "F**K NY" inscription Authenticated by Beckett (BAS) with a witnessed COA Custom jersey style in size XL

About This Item Hand-signed by Detroit Tigers legend and Hall of Famer Alan Trammell Official Louisville Slugger full-size baseball bat Elegant black finish Authenticated by JSA with a Witnessed Certificate of Authenticity

About This Item Hand-signed by Baseball Hall of Famer Vladimir Guerrero Sr. Full-size Louisville Slugger black baseball bat Includes JSA Witnessed Certificate of Authenticity Professional grade autograph from one of the game's most dominant hitters

About This Item Hand-signed by Chuck Knoblauch Official Louisville Slugger black professional style bat Includes four unique career inscriptions Authenticated by JSA Witnessed COA

About This Item Hand-signed by Montreal Expos legend Dennis Martinez Official Rawlings Major League Baseball (ROMLB) Inscribed with "PG 7/28/93" commemorating his historic perfect game Authenticated by JSA with a Witnessed Certificate of Authenticity

About This Item Hand-signed by Detroit Tigers legend and Hall of Famer Alan Trammell Special Edition baseball featuring the Gold Glove logo Authenticated by JSA with a Witnessed Certificate of Authenticity (COA) Ideal for collectors of MLB memorabilia and Detroit Tigers history

About This Item Hand-signed by Yankees pitcher Joba Chamberlain Inscribed "09 WS Champs" celebrating the 2009 World Series victory Rawlings Official Major League Baseball (ROMLB) Authenticated by JSA with a Witnessed Certificate of Authenticity

About This Item Hand-signed by MLB legend Dennis Martinez Official Rawlings Major League Baseball (ROMLB) Includes JSA Witnessed Certificate of Authenticity High-quality signature on a premium leather baseball