Old comic books are printed publications that feature a series of illustrated stories, often focusing on superheroes, adventure, or humor. They became popular in the United States during the 1930s and 1940s, with iconic characters like Superman and Batman making their debut. These comics were typically sold for a low price and were aimed at children and young adults. Over the years, old comic books have become collectible items, with some issues fetching high prices at auctions. They are often valued for their historical significance, artwork, and storytelling. Collectors and enthusiasts enjoy preserving these vintage comics, which provide a glimpse into the culture and entertainment of their time.