What is the most expensive Captain America comic book?

The most expensive Captain America comic book is typically considered to be "Captain America Comics #1," published in 1941. In August 2019, a near-mint condition copy of this comic sold for $3.1 million at auction, making it one of the highest prices ever paid for a comic book. This issue features the debut of Captain America and his iconic battle against Adolf Hitler, which significantly contributed to its historical and collectible value.