The Uncanny X-Men #270 From 1990 8.0 X3 is a part of the Marvel Universe and features the X-Men. This comic book has the superhero team in action and is a must-have for fans of Superheroes. The first printing of this comic book is available in a single issue format. The era featured in this comic book is the Copper Age (1984-1991) and is an essential addition to any comic book collection.