King Leopold I 'Epaulettes' Inverted Medallion

Belgium · 1865 · 20 Centimes

This stamp features a portrait of King Leopold I, the first King of the Belgians, in a central medallion. Known as the 'Epaulettes' issue, this particular stamp is a famous error where the central portrait medallion was printed upside down in relation to the surrounding frame. The design is notable for its intricate frame and the distinctive portrait of the monarch.

Issued in 1865, this stamp is part of Belgium's third definitive series. Printing errors like this inverted center were rare but occasionally occurred with bi-color or multi-part printing processes of the era, creating some of philately's greatest treasures.