Randall Cobb Autographed Full Size Helmets are top sellings among NFL Memorabilia. This product has been hand signed by Randall Cobb and the item comes with a Certificate of Authenticity (COA) from JSA. Shop with confidence as this product is 100% authentic and in brand-new condition. Prime One Sports Online is the online leader in certified Randall Cobb signatures and Green Bay Packers sports memorabilia.