The value of a comic book collectible is influenced by a combination of factors, including its age, rarity, condition, and cultural significance.

The first appearance of Superman in Action Comics #1, published in 1938, is widely regarded as the most valuable comic book in history, with copies selling for millions of dollars at auctions.

Mint condition refers to a comic book that is in its original, unread state, with no visible signs of wear or damage.

Jack Kirby is widely recognized for his influential work on Marvel Comics, including co-creating the X-Men and contributing to the development of many other iconic superheroes.

San Diego Comic-Con is one of the largest and most renowned comic book conventions in the world, attracting hundreds of thousands of attendees each year.

Batman made his debut in Detective Comics #27, published in 1939, establishing him as one of the most iconic superheroes in history.

Graded, certified, and authenticated comic books have been evaluated by a third-party company to ensure their condition and authenticity, increasing their value.

Spider-Man's famous catchphrase, "With great power comes great responsibility," emphasizes the moral and ethical obligations that accompany extraordinary abilities.

Adamantium is the indestructible metal that bonds to Wolverine's skeleton, granting him enhanced strength, durability, and regenerative abilities.

The Flash, also known as Barry Allen, possesses the ability to move at superhuman speeds and manipulate time, making him one of the fastest superheroes in the DC Universe.

The Copyright Office is responsible for registering, protecting, and enforcing copyrights in the United States, including those related to comic book characters and stories.

Ant-Man, also known as Scott Lang, possesses the ability to shrink to the size of an ant while retaining his strength and agility.

Metropolis is the fictional city where Superman resides and is known for its towering skyscrapers and advanced technology.

Human Torch, also known as Johnny Storm, possesses the ability to generate and manipulate fire, allowing him to fly and project powerful flames.

Vibranium is the rare and indestructible metal that makes up Captain America's shield, providing him with exceptional protection and offensive capabilities.