A 1939 Superman No. 1, found in a California attic, sold for $9.12 million, setting a new record for the most valuable comic book ever.

A 1939 copy of Superman No. 1, graded 9.0 by Certified Guaranty Company, sold for $9.12 million at a Heritage Auctions event on November 20, 2025, setting a new record as the most valuable comic book ever sold. Discovered in a California attic by the sons of a deceased woman, the comic had been owned by their mother since she was nine during the Great Depression. It is one of fewer than 210 known copies, with only seven graded 6.0 or higher. The sale surpasses the previous record of $6 million for an Action Comics No. 1. The transaction highlights the growing market for rare, well-preserved Golden Age comics.