Authenticity Guarantee

GSMemorabilia knows the importance of authenticity and stands behind every autograph we sell. We want you to have no doubts about the authenticity of any item you may purchase from GSMemorabilia. Every autograph sold by GSMemorabilia is backed by our Guarantee of authenticity. In fact, every item we sell comes with a Certificate of authenticity from the most reputable AUTOGRAPH AUTHENTICATION companies in the entire autograph industry.

The most reputable companies in the industry are Beckett Authentication Services (BAS), Professional Sports Authenticators (PSA/DNA), James Spence Authentication (JSA), Fanatics Authentic, Tristar, Steiner Sports, Upper Deck, and MLB Authentication. In each listing, you will find the accompanying authenticity in the title, description, and pictures so you can rest assured, with every autograph you purchase from GSMemorabilia, you are purchasing the real deal.