Stobi (now Gradsko, Macedonia) was an ancient town of Paeonia, conquered by Macedonia, and later made the capital of the Roman province of Macedonia Salutaris. Stobi prospered under Rome and in 69 A.D. was designated a municipium. Citizens of Stobi enjoyed Ius Italicum and were citizens of Rome. Theodosius I stayed in Stobi in 388. In 479, Stobi was sacked by the Ostrogothic king Theodoric. The town was rebuilt, but in 518 was struck by a powerful earthquake. Avaro-Slavic invasions in the 6th century ruined the city's economy and infrastructure. Stobi is perhaps the most important archaeological site in the Republic of Macedonia.
None of the references describe this bust. Josifovski identifies all dies for Severus with the Victory left reverse as laureate, draped, and cuirassed but this coin (and his coin 126 from the same dies) is not draped or cuirassed. We believe there is the slight trace of an aegis on the far shoulder. Varbanov references Josifovski.
Josifovski, P. Roman Mint of Stobi. (Skopje, 2001).
Josifovski, P. Stobi - The Kuzmanoviæ Collection, Vol. I. (Skopje, 2010).
Petrovic, J. "Stobi in der Numimatik" in Numizmaticar 1 (1934), pp. 20 - 29.