The 1989 Topps Baseball Factory Sealed Set includes 792 standard-sized trading cards featuring Major League Baseball players such as Don Mattingly, Gary Sheffield, Cal Ripken, Jr., Randy Johnson, Barry Bonds, and more. This original set manufactured by Topps in the United States includes cards from various MLB teams like the Boston Red Sox, New York Yankees, and Los Angeles Dodgers. With features like a base set and checklist, this set captures the essence of the 1989 baseball season, making it a valuable collectible for fans and collectors alike.