About Us

 MJM Authentics is a premier sports and celebrity memorabilia company specializing in authentic, hand-signed collectibles. 

Since 2004, we have built our reputation on trust, integrity, and a genuine passion for preserving iconic moments in sports and entertainment history.  

In addition to offering authentic memorabilia, MJM Authentics hosts both private and public autograph signings, providing fans and collectors with exclusive opportunities to meet legendary athletes and celebrities and obtain authentic signatures firsthand. 

We also proudly operate a tailgate booth at the Hilton Santa Clara every 49er home game, creating an in-person experience for collectors on game days.  

Every autograph we sell is 100% authentic and includes a Certificate of Authenticity from industry-leading third-party authenticators such as Beckett Authentication Services (BAS), JSA, PSA/DNA, or Fanatics. 

Our Mission At MJM Authentics is to deliver genuine, investment-quality sports and celebrity memorabilia while upholding the highest standards of authenticity, transparency, and trust. We are committed to connecting fans with the legends they admire and creating memorable collecting experiences rooted in integrity and passion.