About the item: This postage stamp and envelop First Day of Issue cancellation (FDI) was released by the United States Postal Service in honor of Wonder Woman?s 75th anniversary. Four stamps were released in all, and this stamp features the artwork of Cliff Chiang and depicts Wonder Woman during the Modern Age of Comics. It is signed by hand by Chiang (signed at his 2021 appearance at the Baltimore Comic Con). Please note- the signature is real. It is the actual, hand-signed signature of the comic creator stated. It is not a pre-printed image on the FDI. Please see below for important information about the availability of COA's. 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