150th Anniversary of the Danube Commission

Thank you My friend Karoly from Serbia for this very nice First Day Cover. The pretty stamp on the left shows the city of Novi Sad and the one on the right Belgrade the Capital.

Serbia - Sremska Mitrovica

Sremska Mitrovica is a city and municipality located in the Vojvodina province of Serbia, on the left bank of the Sava river. As of 2002 the town had a total population of 39,041, while Sremska Mitrovica municipality had a population of 85,605. It is the administrative centre of the Srem District of Serbia. It was one of four Roman Capitals, of the ancient Roman Empire. Capital of the Roman Empire during the Tetrarchy, the city was referred to as the glorious mother of cities. Likewise, ten Roman Emperors were born in or near this city, Emperors Herennius Etruscus(251), Hostilian (251), Decius Traian (249-251), Claudius II (268-270), Quintillus (270), Aurelian (270-275), Probus (276-282), Maximianus Herculius (285-310), Constantius II (337-361) and Gratian (367-383). The card sent by Sofija shows the cable-stayed pedestrian bridge “Sveti Irinej”, and a unique golden coin of the Roman Era.