James Cook Signed Bills NFL Rivalries Mini Helmet - BAS COA

James Cook signed this Buffalo Bills NFL Rivalries Series Riddell Speed mini helmet directly on the shell, delivering a signed piece tied to the league's newest team-rivalry design and one of the most productive seasons by a running back in Bills history.

The 2025 campaign rewrote what Cook means to this franchise. He led the NFL with 1,621 rushing yards on 309 carries, took home the Jim Brown Award at NFL Honors for the league's top rushing total, and earned his third consecutive Pro Bowl nod at age 26. Buffalo had not produced an NFL rushing champion since 1976 — Cook ended a forty-nine year drought wearing the same uniform that O.J. Simpson once wore. Add the four-year, $48 million extension he signed in August 2025, and this autograph captures a player who is both the present and the projected future of the Bills' ground game.

The Rivalries Series itself adds a layer no standard team helmet carries. Riddell built the line around team-specific rivalry-themed designs released for the 2025 season, making this colorway a recent and distinct release within the broader Buffalo Bills helmet catalog. Pairing Cook's signature with the Rivalries shell separates this mini helmet from the standard Speed minis already signed by him in collector circulation — same player, different and far less common canvas.

The Riddell Speed mini stands approximately 5.5 inches tall as a half-scale officially licensed collectible, featuring the authentic shell shape, S2BD-SW-SP-style facemask, four-point chinstrap, and official Bills paint and decals that mirror the on-field Speed helmet design. The compact footprint makes it ideal for shelf, desk, or display-case presentation while leaving the full shell available as signing surface.

Authentication: Beckett Authentication Services (BAS) has authenticated the autograph, applying a tamper-proof numbered hologram to the helmet that can be verified through the unique serial number at Beckett's website. The signed piece ships with its matching Beckett Certificate of Authenticity.

Cook's NFL Rivalries mini helmet ships from Gameday Sports Memorabilia backed by our Lifetime Authenticity Guarantee and BBB A+ rating.