The Donruss Diamond Kings Insert Baseball cards printed in 1989 feature Major League Baseball players like rookie Ken Griffey Jr. These sports trading cards are from the Diamond Kings Series, manufactured by Donruss. Made of card stock, these near mint or better cards are ungraded and part of an insert set that includes players such as Lou Whitaker, Willie Randolph,Bo Jackson and Steve Sax. The cards are in English and are a sought-after collectible for baseball fans and card enthusiasts alike.