Airmail and Aviation

In 1918, airmail still felt like the future arriving overhead. The new 24-cent stamp showed a Curtiss Jenny airplane in blue, framed in patriotic red—but one sheet escaped the press with the airplane upside down. Collector William T. Robey spotted the mistake at a Washington post office and bought the entire sheet before anyone could call it back. The error became legendary, yet its charm lies beyond rarity. It recalls open-cockpit pilots, canvas mail sacks, nervous crowds watching early aircraft, and letters that suddenly crossed distances faster than trains could manage. The tiny inverted plane captures the daring and delightful imperfection of an age learning to fly.