Bo Jackson Signed Full Size Oakland Raiders Replica Helmet JSA COA. The item "Bo Jackson Signed Full Size Oakland Raiders Replica Helmet JSA COA" is in sale since Wednesday, May 12, 2021. This item is in the category "Sports Mem, Cards & Fan Shop\Autographs-Original\Football-NFL\Helmets". The seller is "skio15" and is located in Copperas Cove, Texas. This item can be shipped to United States.