The world's most expensive comic book -- the original 1938 Action Comics featuring Superman -- sold in an eBay auction for US$3,207,852 on Sunday.
Plugged as "the comic book that started it all," and debuts Superman, Clark Kent and Lois Lane, it is the most expensive comic book ever.
"... this comic began the entire superhero genre that has followed during the 76 years since," the site says.
It's considered the "Holy Grail" of comics and is in superb shape, boasting "perfect white pages" and a grade of CGC 9.0.
"This means after 76 years the aging process has yet to begin," the seller says. "Truly this book is a museum piece."
Another copy with the same grade rating sold for $2.1 million several years ago, but "this copy blows the other 9.0 out of the water."
The seller, Darren Adams owner of Pristine Comics, calls it "the Mona Lisa of comics and stands alone as the most valuable comic book ever printed."
Adams says this copy of Action Comics No. 1 treasure was stored in perfect conditions by its original owner -- in high altitude in West Virginia and kept in a cedar chest.
The identity of the 48th and winning bidder was not identified.
Adams was hoping a museum would buy it and said the Christopher and Dana Reeve Foundation will benefit from the sale.
The comic book originally sold for 10 cents.