These self-adhesive stamps are being issued in sheets of 6
This souvenir sheet features a new version of perhaps the most famous error in the history of U.S. stamps: the Inverted Jenny, a 1918 misprint that highlights the ways a single stamp can turn history upside down.
The sheet includes six Inverted Jenny stamps, reprinted with an updated denomination and surrounded by an illustration that includes the National Postal Museum in Washington, D.C.; the route of the first regularly scheduled airmail service between Washington, Philadelphia, and New York; and aviation pioneer Reuben H. Fleet, who was in charge of the first group of airmail pilots. The intaglio printing plates for the new stamps were created using proofs made in 2013 from the original Inverted Jenny dies.
Issued to commemorate the start of the first regular airmail service in the United States, the original Jenny stamp was designed to show a Curtiss JN-4H, or "Jenny," the biplane used to deliver the mail. However, on May 14, 1918, the day an official notice said the stamp would debut, collector William T. Robey of Washington, D.C., purchased one sheet of 100 stamps that mistakenly showed the biplane upside down-and one of the greatest philatelic treasures in U.S history was released into the world.