Man of Steel's golden moment: Rare Superman comic sells for nearly $1 million

An incredibly rare comic book, described by collectors as the "holy grail," has sold for $956,000 at an auction in Dallas.

Action Comics #1, which was published in 1938 and features the first appearance of Superman and Lois Lane, was described by Heritage Auctions as being "the most important comic book ever published."

The auction house described the colours of the comic's front cover as being "particularly bright" with the staples also being rust free.

Superman – otherwise known as mild-mannered Clark Kent – is one of the most iconic characters in comic book history and a mainstay of Hollywood blockbusters.

"Having seen many Action #1's over the years, I am deeply impressed with this copy's eye appeal," Matt Nelson, primary grader at comic book grading service CGC Comics, said in a statement on the Heritage Auctions website.

This is not the first time that Action #1 – which was originally sold for just 10 cents – has made waves. Two years ago, a rare copy of the same comic sold for $3.2 million on eBay.