Gordian III and Tranquillina (238-244). Mesopotamia, Singara. Æ (34mm, 23.48g). 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, centaur (Sagittarius) leaping l., shooting bow; to lower l., half-length figure of river-god Mygdonius swimming l. RPC VII.2 3471; BMC 8-13. Near VF