This jersey was signed by former Chicago Bears Defensive Tackle William Perry, also known as "The Refrigerator", "The Fridge", and "Biscuit" (also formerly of the Philidelphia Eagles and Clemson) and is certified authentic by James Spence number WPP31898 ((https://www.spenceloa.com/)). It is a size XL, new and never worn and comes with all pictured certification. The jersey itself has no team or league emblems and is intended to be a collectible. Personally, I would recommend framing the jersey. Price is negotiable