The 1990 Donruss Diamond Kings set consists of 26 cards and serves as the opening subset of the 716-card Donruss baseball release. Found as cards #1-26, the set continued Donruss’ long-running tradition of showcasing players through the distinctive artwork of renowned baseball artist Dick Perez. Featured stars included Bo Jackson, Ken Griffey Jr., Dave Stewart, John Smoltz, Howard Johnson, and Lou Whitaker, among others.

By 1990, Diamond Kings had become one of the hobby’s most recognizable inserts, blending portrait-style paintings with action scenes to create cards that stood apart from traditional photography-based releases. While produced during the height of the junk wax era, the artwork remains highly regarded by collectors and is often considered one of the defining features of Donruss baseball cards.

Today, the 1990 Diamond Kings set is valued more for its nostalgia and artistic appeal than its rarity. Cards featuring popular stars such as Ken Griffey Jr. and Bo Jackson remain collector favorites, and many hobbyists continue to pursue complete Diamond Kings runs because of Dick Perez’s iconic artwork and the unique place the series holds in baseball card history.