Guardians of the Galaxy #21 continues Jim Valentino's original Guardians saga set in Marvel's 31st Century and features the return of Rancor. Written and illustrated by Jim Valentino with inks by Steve Montano, this issue is part of the original Guardians of the Galaxy series that helped establish the team's comic book legacy decades before their rise in popular culture.

Professionally graded CGC 9.8 with White Pages, this copy is among the highest certified examples of the issue. Although not considered a major key, top-grade copies are increasingly difficult to locate and are desirable for collectors assembling high-grade runs of the original Guardians of the Galaxy series, CGC Registry participants, and fans of Marvel's early-1990s cosmic titles.