Collection: Marketplace Grail Items

About This Item Hand-signed by wide receiver Stefon Diggs Official Riddell Speed mini helmet Special black color variant Beckett Witnessed Authentication includes a numbered hologram and QR code for verification

About This Item Hand-signed by former Clemson Tigers star Deshaun Watson Black edition Clemson Tigers mini helmet Authenticated by JSA Witnessed with a serial-numbered sticker and matching certificate of authenticity Perfect for any Clemson Tigers fan or college football collector

About This Item Hand-signed by Hall of Fame quarterback Kurt Warner Arizona Cardinals Riddell Speed mini helmet Authenticated by Beckett Witnessed with a numbered hologram and QR code Features a sleek black alternate finish

About This Item Hand-signed by Hall of Fame quarterback Kurt Warner Riddell Speed Mini Helmet featuring St. Louis Rams 2000-2016 era logos Beckett Witnessed Authentication includes a numbered hologram and QR code for verification Signed during a public or private autograph appearance

Product Highlights Hand-signed by Pittsburgh Steelers legend "Mean" Joe Greene Inscribed with "HOF" (Hall of Fame) Riddell Speed Mini Helmet with a custom white finish Authenticated by Beckett Witnessed with a numbered hologram and QR code

About This Item Hand-signed by Texas Longhorns quarterback Quinn Ewers Riddell Slate Speed Mini Helmet edition Authenticated by Beckett Witnessed with a numbered hologram and QR code Officially licensed collegiate memorabilia

About This Item Hand-signed by Ohio State Buckeyes star Quinshon Judkins Official Riddell Speed mini helmet Includes Beckett Witnessed certificate of authenticity with QR code

About This Item Hand-signed by Philadelphia Eagles legend Donovan McNabb Riddell Speed mini helmet featuring the matte black Eclipse edition design Autograph authenticated by Beckett (BAS) Witnessed program Signed in silver ink for high contrast

About This Item Hand-signed by Carolina Panthers legend Luke Kuechly Authenticated by Beckett Witnessed with a numbered hologram and QR code Official Riddell mini helmet Classic black Carolina Panthers style

About This Item Hand-signed by Carolina Panthers legend Luke Kuechly Riddell Speed mini helmet featuring the matte black Eclipse Edition design Beckett Witnessed authentication includes a numbered hologram and QR code for verification Stock photo used; item received will be of equal quality and brand new

About This Item Hand-signed by Minnesota Vikings legend Jared Allen Classic 1961-1979 throwback style mini helmet Signature authenticated by Beckett (BAS) Includes matching Beckett Certificate of Authenticity

About This Item Hand-signed by running back Josh Jacobs Oakland Raiders Riddell mini helmet Authenticated by Beckett Witnessed Includes a Beckett numbered hologram and matching Certificate of Authenticity

About This Item Hand-signed by Hall of Fame quarterback Kurt Warner Official Riddell Speed mini helmet Special edition Salute to Service design Authenticated by Beckett with a witnessed hologram and QR code

About This Item Hand-signed by Carolina Panthers legend Luke Kuechly Riddell Speed mini helmet featuring a sleek flat white finish Authenticated by Beckett Witnessed program Includes a numbered Beckett hologram and Certificate of Authenticity

About This Item Hand-signed by Buffalo Bills star Doug Flutie Riddell Lunar Speed Mini Helmet edition Beckett Witnessed authentication includes a numbered hologram and QR code for verification

About This Item Hand-signed by Dallas Cowboys legend Tony Dorsett Inscribed with "HOF 94" celebrating his Hall of Fame induction Riddell football mini helmet Beckett Witnessed Authentication includes a numbered hologram with a QR code for verification