MESOPOTAMIA. Edessa. Severus Alexander, 222-235. Diassarion (Bronze, 24 mm, 9.19 g, 6 h). M A AΛЄΞΑΝΔΡΟC K Laureate, draped and cuirassed bust of Severus Alexander to right, seen from behind. Rev. MHT KO ЄΔЄCCHNωN City-goddess seated to left on rock, holding branch in her right hand; river god at feet. BMC 83. SNG Copenhagen -. Earthen deposits, otherwise, very fine.