This collectible comic book features the final issue of the Dark Phoenix Saga, where Jean Grey sacrifices herself to save the universe. Written by Chris Claremont and illustrated by John Byrne, it's a must-have for any X-Men fan. The first printing, in NM+ condition, comes with a stunning cover by Byrne.

The X-Men #137 is a vintage comic book from 1980, part of the Bronze Age era of US comics. It features the X-Men superhero team, with Phoenix (Jean Grey) as the main character. The comic book is intended for a general audience and has been published by Marvel. Besides the death of Phoenix, it includes other features like a color style and is a single unit sale.