Collection: Marketplace Grail Items

About This Item Hand-signed by BYU legend Jim McMahon Official Riddell full-size authentic helmet Includes Beckett Witnessed certificate of authenticity with numbered hologram

About This Item Hand-signed by NFL legend Deion Sanders Full Size Riddell Speed Replica Helmet Authenticated by Beckett Witnessed Authentication Features a tamper-evident hologram and QR code for verification

About This Item Hand-signed by Indianapolis Colts legend and Hall of Famer Edgerrin James Full-size Riddell Speed Replica helmet Authenticated by Beckett Witnessed with a numbered hologram and QR code

About This Item Hand-signed by Hall of Fame quarterback Kurt Warner St. Louis Rams Riddell Full Size Flash Speed Replica Helmet Authenticated by Beckett Witnessed (BAS) with a numbered hologram and QR code for verification Features the vibrant Flash Speed alternative design

About This Item Hand-signed by New York Giants legend and Hall of Famer Michael Strahan Features a "HOF" (Hall of Fame) inscription Official Riddell Full Size Speed Replica Helmet Authenticated by Beckett Witnessed (BAS) with a numbered hologram and QR code for verification Signed in silver ink

About This Item Hand-signed by New York Giants legend and Hall of Famer Michael Strahan Riddell Full Size Speed Replica "Rave" Edition Helmet Includes Beckett Witnessed authentication with a numbered hologram and QR code Authenticity can be verified on the Beckett Authentication website

About This Item Hand-signed by Rams legend and Super Bowl Champion Aaron Donald Official Riddell Full Size Rivalries Speed Replica Helmet Beckett Witnessed Authentication with numbered hologram Features unique Rivalries edition styling

About This Item Hand-signed by 3x NFL Defensive Player of the Year Aaron Donald Official Riddell Full Size Speed Replica Helmet Beckett Witnessed Authentication featuring a numbered hologram and QR code Item authenticity can be verified through the Beckett database

About This Item Hand-signed by Philadelphia Eagles star wide receiver A.J. Brown Official Riddell Full Size Speed Replica helmet Special edition 2025 Salute to Service design Authenticated by Beckett Witnessed with a numbered hologram and QR code

About This Item Hand-signed by Iowa Hawkeyes standout Sam LaPorta Official Riddell Full Size Speed Replica Helmet Authenticity guaranteed by Beckett Witnessed Authentication Includes a numbered Beckett hologram with QR code for verification Classic Iowa Hawkeyes yellow shell design

About This Item Hand-signed by Detroit Lions tight end Sam LaPorta Official Riddell Full Size Speed Replica helmet Beckett Witnessed Authentication includes a numbered hologram and QR code for verification High-quality autograph obtained at a public or private signing

About This Item Hand-signed by Vikings legendary running back Adrian Peterson Full-size Riddell Speed replica helmet Authenticated by Beckett Witnessed with a numbered hologram and QR code Official Minnesota Vikings colors and team decals

About This Item Hand-signed by NFL Hall of Famer Deion Sanders Full-size Riddell Speed replica helmet Classic 1976 Dallas Cowboys throwback design Beckett Witnessed Authentication with QR code verification

About This Item Hand-signed by Hall of Famer Deion Sanders Official Riddell San Francisco 49ers "Rivalries" 2025 edition full size helmet Speed Replica style helmet Beckett Witnessed authentication includes numbered hologram and QR code

About This Item Hand-signed by wide receiver Davante Adams Official Riddell Full Size Speed Replica Helmet Authenticated by Beckett Witnessed with a numbered hologram and QR code for verification Features New York Jets 2024 team branding and colors

Product Details Athlete: Baker Mayfield Team: Cleveland Browns Item Type: Full Size Authentic Speed Helmet Edition: Eclipse Alternative (Matte Black finish) Signature: Hand-signed by Baker Mayfield in high-contrast ink. Authentication Authentication: Beckett Authentication Services (BAS) Includes: Certificate of Authenticity (COA) and a matching tamper-proof serial-numbered hologram.