Patrick Mahomes, star quarterback for the Kansas City Chiefs, has hand signed this Chiefs Riddell full-size replica helmet at a private signing. This item comes with a certificate of authenticity (COA) from JSA - James Spence Authentication and was signed in the presence of one of their representatives. You will receive a serial-numbered COA along with a matching serial-numbered sticker on the helmet. The authenticity can be verified online by entering the serial number. Item pictured may not be the exact item you will receive.It will be similar quality, and we guarantee your satisfaction. The item "PATRICK MAHOMES AUTOGRAPHED KANSAS CITY CHIEFS FULL SIZE HELMET JSA" is in sale since Monday, March 2, 2020. This item is in the category "Sports Mem, Cards & Fan Shop\Autographs-Original\Football-NFL\Helmets". The seller is "college_authentics" and is located in Allen, Texas. This item can be shipped to United States, China, Mexico, Germany, Japan, Brazil.