This is a Hiroyuki Nakajima signed Rawlings big stick 34 inch full size baseball bat. Hiroyuki Nakajima autographed the baseball bat in black sharpie for us. Check out the photo of Hiroyuki Nakajima signing this EXACT baseball bat for us. This signature has been examined and authenticated by Beckett Authentication Services (BAS), and has been deemed authentic. The Beckett Certificate number is S38001. This authentication can be verified by visiting www.Beckett-Authentication.com and utilizing the authentication number S38001 in the designated area. 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.1