By the 1960s, the actual Marvel comic publisher ... the 1939 "Detective Comics" No. 27 broke the record for the most valuable comic book when an 8.0-graded copy sold in 2010 for $1,075,000.The ...

And that’s why this comic book is so valuable, with a CGC 9.6 copy selling for an amazing $3,600,000, not only topping this list but holding the record for the most expensive comic book of all time.

This auction established this copy of Action Comics as the most valuable comic book ever. The Man of Steel has made history again as Superman’s first appearance in a comic book has just ...