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Authenticity Guarantee  
Whether you purchase autographed collectibles for fun, profit or both, GrayHawk Memorabilia is absolutely committed to your complete satisfaction. That’s why we guarantee the authenticity of every autographed item we sell.

The signed items we sell come exclusively from paid athlete appearances and from only the top, most reputable suppliers in the business, including Steiner Sports, Mounted Memories, UDA (Upper Deck Authenticated), TriStar Productions, Schwartz Sports and more.

Steiner Sports
Steiner Sports opened its hand-signed memorabilia division in 1992, and since that time has become the top distributor of authentic sports collectibles by stressing quality and authenticity. Steiner Sports is the world leader in authentic hand-signed memorabilia. Steiner Authentication Process:
  • Witness: Each and every hand-signed collectible that carries a tamper-proof hologram is witnessed by a Steiner Sports representative. Once the collectibles have been autographed, they are cataloged and inventoried.
  • Affidavit: A notarized affidavit is prepared and signed by the athlete and a Steiner Sports representative. The notarized affidavit records the date and location of the signing and also details the items that were signed by the specified athlete. This document is then secured within the Steiner Sports main offices.
  • Hologram: Each hand-signed collectible is examined for quality and signature condition. If the collectible meets the Steiner Sports standard of excellence a tamper-proof Steiner Sports hologram is affixed to the product.
  • Certificate: Once the hand-signed collectible has passed the steps listed above, a Steiner Sports Certificate of Authenticity is created for the collectible. The collectible is then sealed and stored within our main office and is not handled until it is delivered to a sports collectible enthusiast.


  • Mounted Memories
    There are only two ways that we get the memorabilia that we sell. Some of the items come through signings that we sponsor, and all the rest are signed in the presence of our authorized agents. That's why we can offer an ironclad guarantee assuring the absolute authenticity of all of our hand-signed memorabilia. And, for your added protection, each item is accompanied by a certification card verifying its authenticity. In recognition of our continuing commitment to integrity, both the National Football League and Major League Baseball have given us official licenses as distributors of autographed products. The bottom line is that when you buy from Mounted Memories, you can rest assured that you've gotten the real thing.

    Upper Deck
    Authenticity has been a central theme to Upper Deck products since the company's inception in 1988. The company revolutionized trading cards using sophisticated printing technology to improve the overall quality of products and adding a trademark hologram that prevented them from being counterfeited. In 1992, Upper Deck expanded the company's focus on authenticity to include fine autographed sports memorabilia backed by a patented five-step authentication process which guarantees fans are receiving genuine autographs.

    The heart of the five-step process is the company's policy that an Upper Deck representative must witness each autograph signed by any one of its stable of high-profile athletes including Tiger Woods, Michael Jordan, Kobe Bryant, Ken Griffey Jr., Peyton Manning, and Kevin Garnett to name a few.

    Today Upper Deck dedicates more resources than any other sports collectibles and memorabilia company to ensure the authenticity of its products.

    As the popularity of professional sports has grown over the years, so has the demand for autographed collectibles. To forgers, public interest in sports signifies a golden opportunity to make a buck off unsuspecting fans. Upper Deck recognized the problem and introduced a solution when he established Upper Deck Authenticated in 1992 and created the first authentication system in the industry. His mission was to create a source that sports fans could trust for genuine autographed sports memorabilia.

    At the heart of the company's patented five-step authentication process is the company's policy that an Upper Deck representative must witness each autograph signed by any one of the high-profile athletes with whom it has a relationship.
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