MESOPOTAMIA. Nisibis. Severus Alexander, with Julia Mamaea, 222-235. Tetrassarion (Bronze, 26 mm, 11.33 g, 11 h). AYT K M AYP CEY AΛEΞANDPOC IOY MAMAEA (or similar) Laurate, draped and cuirassed bust of Severus Alexander, on the left, facing draped bust of Julia Mamaea, on the right. Rev. KOΛO NЄCIBI MHT Turreted, veiled and draped bust of the city-goddess to right; before, grain ear; in fields, two stars. BMC 9. Some deposits, otherwise, very fine.