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