Authentication Services

Pro Signatures Memorabilia offers authentication services for your sports and celebrity memorabilia. We have partnered with the top authentication companies so you can be sure the authentication process will provide accurate information and assist in properly valuating your memorabilia. Contact us today and we can start the authentication process for your sports and celebrity memorabilia.

We have partnered with the following companies:






Global Authentics LLC provides consumer protection and value preservation for consumers, dealers, collectors and charities by verifying the quality and originality of autographed sports and entertainment memorabilia.

Global Authentics LLC offers the following services:

  • Autograph Authentication
  • Signed-In-The-Presence Verification
  • Value Consultation
  • Vintage Autograph Authentication
  • Modern Autograph Authentication
  • Digital Review








Professional Sports Authenticator (PSA) is the largest and most trusted third-party grading and authentication company in the world. PSA is the preferred choice of collectors, dealers and auction houses worldwide. PSA has processed over 20 million cards and collectibles with a cumulative declared value of over a billion dollars.

Founded by PSA in 1998 in response to widespread counterfeiting, forgery and piracy of autographed collectibles, PSA/DNA is the world’s leading third-party authentication service for autographs and memorabilia.