Severus Alexander, AE45 medallion of Kyzikos, Mysia. AD 222-235. Magistrate Aur. Aristiados. 45.95 g.

AYT K M AYR CEOY ALEXANDROC, laureate, draped and cuirassed bust left, holding spear over right shoulder, and shield decorated with a gorgoneion.
EPI CTRA AYR ARICTIADOY KYZIKHNWN NEOKORWN, Athena seated left, holding a bowl, feeding a serpent entwined around a knotted staff to left. 

wwxls 41202; Bucephalus 21, 561; (RPC VI temp 30631).

With permission of Bucephalus Numismatic auction 21, lot 561, June 2023