Released and stamped with the special First Day Issue cancellation mark (available only at the 2007 San Diego Comic Con itself (where the stamp also debuted), this official USPS stamp set features both Spiderman stamps from the 20 stamp collection (featuring the cover to ASM #1 by Steve Ditko and the character shot by John Romita, Sr). In nm/mint condition, both FDI's will be shipped with the utmost care.