Serbia 1918 King Peter I Overprinted 'SERBIEN'

Serbia · 1918 · 10 Para

This stamp features a portrait of King Peter I of Serbia, originally issued in 1911. It was later overprinted in black with 'SERBIEN' for use during the Austro-Hungarian occupation of Serbia in World War I. The overprint signifies the provisional nature of postage during this tumultuous period.

Issued during the final year of World War I, these overprinted stamps were used in territories of Serbia occupied by Austro-Hungarian forces. They represent a key transitional period just before the formation of the Kingdom of Serbs, Croats and Slovenes (later Yugoslavia).