Just how old is enough can be a little nebulous, and so it can be with comic books. Anything published after 1980, says Heritage Auctions, will "have little if any value," while Anderson & Garland ...

It means the issue of Action Comics #1, which sold for 10 cents when it was released in 1938, is the world's most valuable comic book ... was "buried in a stack of old 1930s movie magazines ...