Rare Stamp Apr 2026

: The Inverted Jenny . In 1918, a printing error left the Curtiss JN-4 biplane flying upside down on a sheet of 100 stamps. Today, a single one can be worth upwards of $2 million , according to recent sales tracked by Paul Fraser Collectibles .

: Sometimes, perfection is overrated. What’s the coolest "mistake" you've ever found in your collection? rare stamp

: Meet the legend of philately: The British Guiana 1c Magenta . : The Inverted Jenny