Constans II (641-668) with Constantine IV. AR Hexagram. Constantinople mint, 654-659 AD. Obv. [dN] CONSTANTINYS C CONSTANT. Facing busts of Constans with long beard, and Constantine IV, beardless; each wearing crown and chlamys; between their heads, cross. Rev. dЄYS AdIYtA ROmANIS. Cross potent on globe above three steps; in field to right, B. D.O. 55; MIB 150; Sear 996. AR. 5.31 g. 22.00 mm. R. Rare. Brilliant and lightly toned. Irregular flan. Good VF.