X-Men #36 VF+ (8.5)
X-Men vs. Mekano cover and story, very nice, might make 9.0
X-Men #36 F/VF (7.0)
The X-Men vs Mekano cover and story by Roy Thomas and Ross Andru
X-Men #36 NM- (9.2)
The X-Men vs Mekano cover and story by Roy Thomas and Ross Andru
X-Men #36 VF+ (8.5)
X-Men vs. Mekano cover and story, very nice, might make 9.0, date stamp top of cover
X-Men #37 VF/NM (9.0)
X-Men cover and story, very sharp, a bit of tanning along the edges
X-Men #37 VF+ (8.5)
Cyclops vs. Quicksilver cover, X-Men cover and story
X-Men #38 VF+ (8.5)
X-men cover and story, Very pretty copy, very white cover
X-Men #40 CGC 9.4
1st appearance of the Frankenstein monster at Marvel, X-men cover and story
X-Men #40 CGC 9.8
Highest Certified1st appearance of the Frankenstein monster at Marvel, X-men cover and story by Roy Thomas, Don Heck, Werner Roth and George Tuska
X-Men #42 VF+ (8.5)
Death of Professor X, X-men cover and story by Roy Thomas and Don Heck
X-Men #44 VF- (7.5)
1st Silver Age appearance of Red Raven. X-Men cover and story
X-Men #45 VF+ (8.5)
Cyclops vs. Quicksilver cover, X-Men cover and story