Kansas Chiefs mini helmet has been hand-signed in black felt-tip pen by (4) including Curley Culp (HOF), Jan Stenerud (HOF), Emmitt Thomas (HOF), and Johnny Robinson (HOF). The lot / autograph(s) includes an official James Spence Authentication (JSA) hologram and matching COA for authenticity purposes. The signing of this item was witnessed by JSA.Authentication: JSA COA