🌎 Country

United States

📅 Year

1918

💰 Denomination

24¢

📮 Issue type

Airmail

🖼 Topic

Aviation

The 24¢ Curtiss Jenny was the first United States airmail stamp. It was printed in two colours in two passes, and one sheet of 100 left the press with the blue aeroplane upside down. William Robey bought that sheet at a Washington post office in May 1918.

Picture: Wikimedia Commons · Public domain