Marvel Comics Giant-Size X-Men Comic Book. Giant-Size X-Men. "1 1975 02940" in upper left of cover. In plastic bag. Overall good condition with toning consistent with age and minor wear to edges. Measures 10-1/4" x 6-3/4". All Items are third party shipping or free local pick-up within 60 days of end of sale. Please review our terms. #1 was a special issue of the X-Men comic book series, published by Marvel Comics in 1975. It was written by Len Wein and illustrated by Dave Cockrum. Though not a regular issue, it contained the first new X-Men story in five years, titled Second Genesis. PLEASE NOTE: this lot was from a South Florida Estate. We have NO authentication documents. This has not been graded.