[1] At Tristar's collectors shows, current and former sports players autograph memorabilia.

Rosenberg promoted his first trade show in 1987, forming Tristar Productions, Inc. in the process.

[1] Since then, Tristar has continued to promote events, and has produced and participated in the National Sports Collectors Convention.

[2][3] During events Tristar will host booths where current and retired Major League Baseball, National Basketball Association, National Football League players and professional wrestlers will hold autograph signings.

[10] In March 2008, Tristar acquired an exclusive license deal from Total Nonstop Action Wrestling to produce and distribute TNA trading cards and memorabilia.