Authenticated by the JSA representative and comes with matching serial numbered JSA sticker and COA. The autograph can be confirmed on the JSA website at spenceloa. The helmet also come with the official GTSM Amari Cooper hologram.Both the JSA and hologram are to guarantee authenticity. This helmet is a must for any Amari Cooper, Oakland Raiders or NFL Collector. The item "Amari Cooper Autographed Riddell Oakland Raiders Mini Helmet JSA Authentication" is in sale since Saturday, February 20, 2016. This item is in the category "Sports Mem, Cards & Fan Shop\Autographs-Original\Football-NFL\Helmets". The seller is "brasilmj" and is located in Santa Clara, California. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Russian federation, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Dominican republic, Panama, Trinidad and tobago, Guatemala, El salvador, Honduras, Jamaica.