These are the most valuable comic books in the world ... "Hulk" No. 181 is the first appearance of Wolverine, one of the most popular superheroes ever created. When a 9.9-graded copy sold for ...

Trading cards were an inescapable fad in the '90s that Millennials still love to reminisce about, even though the most valuable ... green variant, the rare mint 8.5 green Wolverine was worth ...