A "First Edition" refers to the very first printing of a book, magazine, or other publication. This edition is often highly sought after by collectors because it represents the original version as the author intended. First editions can be valuable, especially if the book becomes famous or if the author gains significant recognition over time. Collectors often look for specific features in a first edition, such as the publication date and any unique identifiers like a dust jacket or special illustrations. For example, a first edition of J.K. Rowling's Harry Potter and the Philosopher's Stone is particularly prized among fans and collectors alike.