Edessa in Mesopotamia, Severus Alexander, 222-235 AD.,
Diassarion / Æ 24 (22-24 mm / 9,04 g),
Obv.: AY[T] K M A CЄV AΛЄZANΔPOC , laureate, draped, and cuirassed bust of Severus Alexander r., seen from behind.
Rev.: MHT KOΛ [ЄΔЄ]C-CHNWN , Tyche seated left on regular seat, altar before, river-god Euphrates swimming at her feet, two stars flanking.
BMC p. 107, 102 ff. ; SNG Cop. 217 var. .