Collection: The Marketplace

About This Item Hand-signed by boxing legend Julio Cesar Chavez Funko Pop! Figurine #03 Witnessed and authenticated by JSA (James Spence Authentication) Includes a numbered tamper-evident hologram and matching Certificate of Authenticity Stock image shown; item received will be of identical quality

About This Item Hand-signed by former undisputed heavyweight champion Lennox Lewis Signature featured in silver ink on a black Everlast boxing glove Authenticated by Beckett Witnessed with a serial-numbered hologram and QR code Stock photo: Item received is virtually identical and in brand new condition

About This Item Hand-signed by Hall of Fame quarterback Warren Moon Inscribed "HOF" (Hall of Fame) Riddell Full Size Speed Replica Helmet Authenticated by Beckett Witnessed (W Hologram) Features Minnesota Vikings team colors and decals

About This Item Hand-signed by Buffalo Bills legend OJ Simpson Inscribed with "HOF" (Hall of Fame) Riddell Full Size Lunar Speed replica helmet Authenticated by JSA (James Spence Authentication) Witnessed Protection Program Includes matching JSA Certificate of Authenticity and tamper-evident sticker

About This Item Hand-signed by Preston Smith Custom maroon jersey featuring stitched name and numbers Authenticated by James Spence Authentication (JSA) Jersey features no league logos or brand tags Includes JSA certificate of authenticity and matching serial-numbered sticker

About This Item Hand-signed by NBA legend and Hall of Famer Kevin McHale Official Wilson NBA Authentic Series basketball Authenticated by Beckett Witnessed (BAS) with a numbered hologram and QR code Signature featured in silver ink

About This Item Hand-signed by New Orleans Saints quarterback Derek Carr Official Riddell Full Size Speed Authentic Helmet Special edition Lunar Speed matte white finish Authenticated by Beckett Witnessed with a numbered hologram and QR code

About This Item Hand-signed by boxing legend Tommy Hearns Black Everlast boxing glove signed in silver ink Authenticated by Beckett Witnessed with a serial-numbered hologram High-quality collectible from one of the greatest champions in boxing history

About This Item Hand-signed by boxing legend Tommy "The Hitman" Hearns Authentic Red Everlast boxing glove Authenticated by Beckett Witnessed with a serial-numbered hologram Signature was witnessed by a Beckett representative at a formal signing event

About This Item Hand-signed by Brock Purdy Iowa State Cyclones Slate edition mini helmet Authenticated by Beckett Witnessed Protection Program Includes Beckett certificate of authenticity and hologram

About This Item Hand-signed by San Francisco 49ers quarterback Brock Purdy Retro style mini helmet Includes Beckett Authentication Services (BAS) Witnessed Protection Program hologram Authenticated with a Denver Autographs certificate of authenticity

About This Item Hand-signed by San Francisco 49ers quarterback Brock Purdy Official Nike Game Alternate edition jersey Authenticated by Beckett Authentication Services (BAS) Witnessed Protection Program Includes Certificate of Authenticity and tamper-proof hologram

About This Item Hand-signed by San Francisco 49ers star Brock Purdy Full-size replica retro helmet Authenticated by Beckett (BAS) Witnessed Protection Program Includes Beckett certificate of authenticity and hologram

About This Item Hand-signed by former Iowa State star Brock Purdy Iowa State Cyclones Slate edition mini helmet Beckett Witnessed Protection Program authentication

About This Item Hand-signed by San Francisco 49ers quarterback Brock Purdy Red pro-style jersey with sewn-on numbers and letters Authenticated by Beckett (BAS) under the Witnessed Protection Program A Beckett representative was present during the signing to ensure authenticity

About This Item Hand-signed by San Francisco 49ers star quarterback Brock Purdy Black "Rivalries" style jersey featuring sewn-on numbers and letters Beckett Witnessed Authentication - BAS representative was present for the signing Size XL pro-style jersey