While cleaning out their late mother's California attic last Christmas, three brothers made a life-changing discovery under a pile of faded newspapers: one of the first Superman comics ever made.

An original copy of the June 1939 first edition on the Man of Steel's adventures, it was in a remarkably pristine condition.

Now it has become the highest-priced comic book ever sold, fetching $9.12m (£7m) at auction.

Texas-based Heritage Auctions, which hosted Thursday's sale, called it the "pinnacle of comic collecting".

The brothers found six comic books, including Superman #1, in the attic underneath a stack of newspapers inside a cardboard box and surrounded by cobwebs in 2024, Heritage said in a press release.