Constans II (641-668) with Constantine IV. AR Hexagram, Constantinople mint, 659-668 AD. D/ [dN CONST]ANTI C CON. Facing busts of Constans, with long beard, and Constantine IV, beardless; each wearing chlamys, the former with plumed helmet, the latter with crown; between their heads, cross. R/ dЄYS [Ad]IYta ROMANIS. Cross potent set on three steps; crowned and draped figures of Heraclius and Tiberius standing facing to eihter side, each holding globus cruciger; below, Θ. D.O. 101; Sear 1022 (Thessalonica ?). g. 6.32 mm. 22.50 RR. Very rare and interesting dynastic issue. A very attractive, brilliant example. Minor areas of flatness, otherwise about EF.