About the item: Released and stamped with the special First Day Issue cancellation, this official USPS stamp features X-Men #1 and debuted at the 2007 San Diego Comic Con. In nm/mint condition, it will be shipped with the utmost care. Please note- the signature is real. It is the actual, hand-signed signature of Carl Herrman, the USPS art director who coordinated the design of the stamps and selected the images from the vast store of Marvel?s artwork that appears in the set. It is not a pre-printed image on the FDI. ~Certificate of Authenticity/Provenance: Excepting pack-pulled autograph trading cards, CGC Signature Series, signed Sideshow prints, and like collectibles, all autographed items Vault Collectibles sells were personally witnessed, by myself, being signed by the writer, artist, or celebrity in question. No third party is involved. Further, art sketches - and most published original art I sell - were obtained directly from the artist themselves. For buyers desiring this guarantee in written form, this statement guarantees that the above referenced item is as stated in the listing description. A screen capture of the completed auction page, which includes this statement of provenance, may be saved by the buyer as a digital file or print off in hardcopy form. As this serves as written proof of said guarantee, no physical documentation will be included in the package when the item is mailed. J. Brian O?Bryant VaultCollectibles dba as empire.auctions