Unlike most sports memorabilia companies, we are with the athlete when all of our sports memorabilia is signed. You never have to worry about the authenticity of our sports memorabilia autographs. You can rest assured that every piece of autographed sports memorabilia has an authentic signature. Our hologram is the best in the sports collectibles industry stating "Autograph Witnessed by NSD." Authentic Sports Memorabilia - NSD has the best!