Action Comics #1 is the single most important comic in the medium's history: the very first appearance of Superman, the character that created the entire superhero genre, in June 1938.
This specific copy was once owned by actor Nicolas Cage, stolen from his California home in 2000, and recovered years later in a storage locker — a real-life mystery plot that made it instantly famous beyond comic-collecting circles.
Its January 2026 private sale for $15 million made it the most expensive comic book, and by some counts the most expensive pop-culture collectible, ever sold.
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