Gordian III and Tranquillina (238-244). Mesopotamia, Nisibis. Æ (33mm, 24.15g).
Confronted busts of Gordian r., laureate, draped and cuirassed, and Tranquillina l., draped and wearing stephane. R/ Tyche seated l. on rocks, holding branch; above, ram Aries l.; to lower l., half-length figure of river-god Mygdonius swimming l. RPC VII.