New Kansas City Chiefs quarterback Patrick Mahomes has autographed this officially licensed Kansas City Chiefs full size replica helmet. Autograph is authenticated by James Spence Authentication (JSA). Comes with JSA certificate of authenticity and matching sticker # verified on their website. JSA is one of the world's leading authenticator of autographs. It is a "witness" COA, meaning a representative from JSA was present for the signing with him and witnessed him signing your item. 100% authentic.
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