This Autographed December 5, 2021 Game Used Rookie Season Black Nike Home Jersey with the inscription of "12/5/2021 Game Used Vs Ravens" has been Personally Signed by Najee Harris of the Pittsburgh Steelers. This item is 100% Authentic to include a LOA from Sports Investors Authentication. The letter will also include photomatching to the specific date of use. The authenticity can be verified on Sports Investors Authentication website. The signature and inscription is 100% Authentic to includes a numbered hologram by Fanatics. The signature authenticity can be verified on Fanatics website.