BITHYNIA. Kios. Tranquillina, Augusta (241-244 AD) AE Bronze (25.6mm 7.35g) Obv: ϹΑΒΕΙΝΙΑ ΤΡΑΝΚΥΛΛΕΙΝΑ. Diademed and draped bust of Tranquillina, right Rev: ΚΙΑΝΩΝ. Tyche standing left, holding rudder and cornucopia RPC VII.2, 1878