This is a Jimmie Johnson signed 1/3 scale replica Nascar racing mini helmet. The helmet measures approximately 6 3/4" long x 5 1/2" wide x 5" tall. Jimmie Johnson autographed the helmet, on the crown of the helmet, in black sharpie. This mini helmet has been examined and authenticated by Beckett Authentication Services (BAS), and has been deemed authentic. The Beckett Certificate number is S38143. This authentication can be verified by visiting www.Beckett-Authentication.com and utilizing the authentication number S38141 in the designated area. All signatures have been obtained by Southwestconnection-Memorabilia, directly from the athlete or celebrity. Southwestconnection-Memorabilia never purchases collectibles from a 3rd parties, to ensure that we offer our clients some of the top rated autographed sports and entertainment memorabilia on the internet. An Certificate of Authenticity- COA- will be issued by Southwestconnection-Memorabilia stating our 100% guaranteed authentic policy along with details- date and location of the autograph signing. 4x6 proof photo(s) of the athlete signing will also be included with your purchase. Thank you for shopping with us.