MESOPOTAMIA, Singara. Gordian III, with Tranquillina. AD 238-244. Æ (31-34mm. 25.95g). Laureate, draped and cuirassed bust of Gordian III right, and draped bust of Tranquillina left, wearing stephane / Tyche of Singara seated left on rock outcropping, holding grain ears, [river-god swimming left below; above, the centaur Sagittarius to left]. BMC 13; SNG Copenhagen 257; Lindgren & Kovacs 2627.