Collection: Marketplace Grail Items

Product Details Athlete: Yoenis Cespedes Team: Oakland Athletics Item Type: Custom Stitched Jersey Color: White Size: XL Authentication Authenticator: JSA (James Spence Authentication) Witnessed COA Integrity: This item features a JSA Witnessed tamper-evident hologram and matching Certificate of Authenticity, ensuring the signature was signed in the presence of a JSA representative.

About This Item Hand-signed by New York Mets manager Bobby Valentine Inscribed "Mets HOF 2026" JSA Witnessed Certificate of Authenticity included Custom jersey style (Size XL)

Product Details Athlete: Ronny Mauricio Item Type: Full-Size Rawlings Black Baseball Bat Team: New York Mets Signature: Hand-signed by the athlete Authentication Authenticated by James Spence Authentication (JSA) Includes a JSA Certificate of Authenticity (COA) and a matching tamper-evident hologram Guaranteed 100% Authentic Product Highlights Perfect for display in a home office, fan cave, or sports room A must-have for...

Product Details Athlete: Kevin Parada Team: New York Mets Item: Autographed Black Rawlings Full-Size Baseball Bat Signature: Hand-signed by the athlete during an in-person appearance. Authentication Authenticator: Beckett Witness Certificate of Authenticity (BAS COA) Verification: Includes a tamper-proof serial-numbered hologram for absolute authenticity.

About This Item Hand-signed by Washington Nationals prospect Travis Sykora Official Major League Baseball (ROMLB) Authenticated by JSA (James Spence Authentication) Includes JSA Certificate of Authenticity

About This Item Hand-signed by Blake Butera Inscribed with "Go Nats!" Official Rawlings Major League Baseball (ROMLB) Authenticated by JSA (James Spence Authentication) Washington Nationals team affiliation

About This Item Hand-signed by pitcher Kai-Wei Teng Official Major League Baseball (ROMLB) Houston Astros edition Authenticated by JSA (James Spence Authentication) and includes a Certificate of Authenticity

About This Item Hand-signed by MLB star Xander Bogaerts Official Rawlings Major League Baseball (ROMLB) Authenticated by JSA (James Spence Authentication) Features his San Diego Padres era signature

About This Item Hand-signed by Pittsburgh Pirates legend and Hall of Famer Willie Stargell Official National League (ONL) baseball Authenticated by JSA with included Certificate of Authenticity

About This Item Hand-signed by Boston Red Sox legend Bobby Doerr Includes "HOF 86" inscription Official Major League American League baseball Authenticated by Beckett (BAS) and Denver Autographs

About This Item Hand-signed by New York Mets legend Bobby Valentine Official Major League Baseball (ROMLB) Authenticated by JSA (James Spence Authentication) with a Witnessed COA Includes "Mets HOF 26" inscription

About This Item Hand-signed by former MLB All-Star Brian Jordan Official Major League Baseball (OML) manufactured by Rawlings Includes Beckett Witnessed Authentication with a tamper-proof hologram sticker and QR code Authenticated signature in blue ink

About This Item Hand-signed by 1990 Cy Young Award winner Doug Drabek Inscribed with career stats: "90 NLCY", "22-6", and "2.76" Official Rawlings Major League Baseball (OML) Authenticated by Beckett with a witnessed hologram and QR code

About This Item Hand-signed by 2007 World Series MVP Mike Lowell Inscribed "07 WS MVP" in blue ink Rawlings Official Major League Baseball Includes Beckett Witnessed authentication with a numbered hologram and QR code

About This Item Hand-signed by MLB pitcher Ryan Pressly Official Rawlings Major League Baseball (OML) Authenticated by TriStar with a numbered hologram and QR code Authenticity can be verified on the TriStar website

About This Item Hand-signed by Minnesota Twins legend Chuck Knoblauch Inscribed with "91 ROY WS Champs" commemorating his Rookie of the Year award and World Series title Official Rawlings Major League Baseball Authenticated by Beckett Witnessed with a tamper-evident hologram and QR code