Postage stamps and postal history of Northern Epirus
The postal history of Northern Epirus, a region in the western Balkans, in southern modern Albania, comprises two periods; 1912–1916 and 1940–41. Northern Epirus was under Greek administration during the First Balkan War (1912–1913), but it was then awarded to the newly founded Albanian state by the Florence Protocol (1913).
Source: Wikipedia — Postage stamps and postal history of Northern Epirus (CC BY-SA 4.0)