Old comic books have a way of disappearing into attic boxes, basement bins, and childhood collections without anyone giving them much thought. But certain issues have become incredibly desirable among collectors, with rare, high-grade copies selling for thousands and, in a few extraordinary cases, millions of dollars.

The highest prices tend to go to comics tied to major character debuts, important storylines, unusual printing errors, or exceptionally well-preserved copies. Based in part on research from Vintage Know How, here are 10 vintage comic books that have commanded some seriously impressive prices.

1280px Classic Comics Unsplash — Image Credit: Mitch Rosen focusmitch, CC0, via Wikimedia Commons

1. Fantastic Four #1 — Published in 1961 and introducing Marvel’s Fantastic Four, this landmark issue has become a collector favorite, with an exceptional graded copy selling for more than $2 million.

2. Avengers #1 — Marvel’s 1963 Avengers #1 brought Iron Man, Thor, Hulk, Ant-Man, and Wasp together for the first time, making high-grade copies potentially worth hundreds of thousands of dollars.

3. Captain America Comics #10 — This 1942 Golden Age issue was the final Captain America comic produced by Joe Simon and Jack Kirby before leaving Timely Comics, making rare high-grade and signed copies especially desirable.

4. The Incredible Hulk #1 — The Incredible Hulk #1 introduced Bruce Banner and the original gray-skinned Hulk in 1962, with exceptional copies selling for hundreds of thousands of dollars.

5. Fantastic Four #48 — Released in 1966, this important issue introduced the Silver Surfer and Galactus and has become one of the most collectible Fantastic Four comics.

6. Amazing Fantasy #15 — Famous for introducing Spider-Man in 1962, Amazing Fantasy #15 reached an incredible $3.6 million when a CGC 9.6 copy sold in 2021.

7. Giant-Size X-Men #1 — This 1975 comic helped reinvent the X-Men by introducing characters including Storm, Nightcrawler, and Colossus while bringing Wolverine onto the team.

8. The Brave and the Bold #28 — This 1960 DC comic introduced the Justice League of America, with an exceptionally preserved CGC 9.6 copy reportedly selling for $810,000.

9. Venom: Lethal Protector #1 Black Cover Error — A rare printing error left some copies without their intended red foil background, turning the unusual black-cover version into a valuable modern collectible.

10. Four Color #16 — This 1941 Dell comic featuring Mickey Mouse and the Phantom Blot has become a prized Disney collectible, with a CGC 9.2 copy reportedly selling for $78,000.