Bidspirit auction | FANTASTIC FOUR #28 MARVEL 1964
FANTASTIC FOUR #28 MARVEL 1964 - First crossover of the X-Men in the Fantastic Four title, 2nd appearance of the Mad Thinker - FAIR/GOOD
FANTASTIC FOUR #28 MARVEL 1964 - First crossover of the X-Men in the Fantastic Four title, 2nd appearance of the Mad Thinker - FAIR/GOOD