To celebrate National Postage Stamp Day, the PASH team pulled imagery from The World Stamp Show-New York 2016. Image above is of a rare but seamlessly preserved "Inverted Jenny" - the official stamp designed in recognition of the launch of the U.S. Postal Airmail Service released on May 14, 1918, just one day prior to the maiden flight. Shortage of postal workers during WW1 strained resulting in more frequent printing faux pas, including the "Inverted Jenny". It's estimated 100 sheets of erroneously printed upside-down Curtiss JN-4 "Jenny"biplanes exist. The single, pristine "Jenny" stamp auctioned May 30, 2016 went for $1,175,000.00.