Hollywood Collectibles: Rich Altman, founder and owner of Hollywood Collectibles, has contributed to two books written about the autographed memorabilia industry and is considered by American Sportscard Monthly to be one of the most influential individuals in the sports autograph trade. From his retail store in Hollywood, Fl., Altman sells directly to collectors, runs a successful mail order division and deals to other vendors. All Hollywood Collectibles memorabilia comes with a paper certificate of authenticity and tamper proof hologram.

PSA/DNA: Items that have been certified authentic by PSA/DNA are traceable through an online database. All PSA/DNA items are assigned certification numbers that are visible on the product's certificate of authenticity and tamper-proof hologram. PSA/DNA provides buyers with the item's authentication date, a product description, location of the signing and a photo of the item. In some cases, PSA/DNA will also include a letter certifying the product's authenticity. See the PSA Authentication Page

Global Authentication, Inc.: Using state-of-the-art security detection technology, GAI's authentication experts have set the standard for sports memorabilia authentication. Items that are reviewed by GAI are subject to side-by-side comparisons, ink/medium analysis, autograph structure evaluations and object evaluations. If an object passes, either the item or a Letter of Authenticity is affixed with a tamper evident label bearing a unique serial number. All GAI certified items come with a Letter of Authenticity, a photogram of the item, certification number and Certificate of Authenticity. Owners can use the serial number assigned to their item to check their collectible GAI's online database. See Global Authentication Page

James Spence Authentication: An expert in the field of authentication, James Spence and his team of autograph verification experts certify autographed memorabilia for individuals, auction houses and memorabilia suppliers. Each JSA certified item is reviewed individually by all of JSA's experts. When personal inspection isn't enough to verify an item's authenticity, JAA employs a high-technology authentication tool to back up the experts' opinions. Items that meet JSA standards are issued Letters of Authenticity, which have become the gold standard in the autographed memorabilia industry. JSA certified items are also issued identification numbers, so collectors and look up their items in the company's online database. See James Spence Authentication Page