A First Day Cover (FDC) is an envelope or postcard that features a postage stamp canceled on its first day of issue. Collectors often seek these items because they commemorate the launch of a new stamp, which may celebrate a significant event, person, or theme. The envelope typically includes a design related to the stamp, enhancing its appeal. FDCs are popular among philatelists, who are enthusiasts of philately, the study and collection of stamps. These covers can vary in value based on factors like rarity, condition, and the significance of the stamp. Collecting FDCs allows individuals to appreciate both art and history through postage.