MESOPOTAMIA. Nisibis. Severus Alexander, 222-235. Tetrassarion (Bronze, 26 mm, 12.62 g, 12 h). ΑΥ ΚΑ ΜΑΡΑΥ ϹЄ ΑΛЄΞΑΝΔΡΟϹ C Laureate head of Severus Alexander to right. Rev. ϹЄΠ ΚΟΛΟ ΝЄϹΙΒΙ ΜΗΤ Turreted, veiled and draped bust of the city-goddess to right; above, ram leaping right, head turned back to left; to upper left and lower right, stars. BMC 4. SNG Copenhagen 233. Very fine.