A rare copy of the first Superman comic book sold for 317,200 dollars at an auction -- a super hero sized increase on the original 10 cents paid back in 1938, AFP reported.
Bids in the online auction, which started two weeks ago on www.comicconnect.com, immediately topped 200,000 dollars and a last-minute surge crossed the 300,000-dollar mark.
There were 89 bids and Comic Connect extended the deadline by several minutes to catch the late interest.
The book is a rare and unrestored copy of the first issue of Action Comics, with a cover showing Superman in his familiar red cape, hurling a green car past terrified onlookers.
Neither the seller nor the buyer were identified.