Additional Product DataWe pride ourselves on selling unique sports pieces. We specialize in team-signed and multi-signed items. We also have a wide variety of vintage and game-used sports merchandise. Whenever possible, our single-signed sports pieces come directly from each athlete’s authorized autograph agent, or private autograph sessions. Most items are sold with independent third-party authentication.Signed at a private autograph session.Sold with a Certificates of Authenticity from The Autograph Source (Lifetime Guarantee).