It’s a bird! It’s a plane! It’s a rare Superman comic book! And it fetched $9.12M!

A copy of the first Superman issue, unearthed by three brothers cleaning out their late mother's attic, netted $9.12 million last month at a Texas auction house, which says it is the most expensive comic book ever sold. The brothers discovered the comic book in a cardboard box beneath layers of brittle newspapers, dust, and cobwebs in their deceased mother's San Francisco home last year, alongside a handful of other rare comics that she and her sibling had collected on the cusp of World War II. She had told her children she had a valuable comic book collection hidden away, but they had never seen it until they put her house up for sale and decided to comb through her belongings for heirlooms, said Lon Allen, vice president of comics at Heritage Auctions. The brothers uncovered the box of comics and sent a message to the auction company, leading Allen to fly out to San Francisco earlier this year to inspect their copy of "Superman No. 1" and show it to other experts for appraisal. "It was just in an attic, sitting in a box, could have easily been thrown away, could've easily been destroyed in a thousand different ways," Allen said. "A lot of people got excited because it's just every factor in collecting that you could possibly want all rolled into one." The "Superman No. 1" comic, released in 1939 by Detective Comics, Inc., is one of a small number of copies known to be in existence and is in excellent condition. The Man of Steel was the first superhero to enter pop culture, helping boost the copy's value among collectors, alongside its improbable backstory, Allen said. The previous record for the world's most expensive comic book had been set last year, when an "Action Comics No. 1"—which first introduced Superman to the world as part of an anthology—sold for $6 million. In 2022, another "Superman No. 1" sold for $5.3 million. This article was provided by The Associated Press.