Constans II, with Constantine IV, Heraclius, and Tiberius. 641-668. AR Hexagram (21mm, 6.69 g, 6h). Thessalonica mint. Struck 659-668. Facing busts of Constans II, wearing plumed helmet, and Constantine IV, wearing crown, each wearing chlamys; cross above / Cross potent set on three steps flanked by Heraclius and Tiberius standing facing; Θ in exergue. DOC 101; MIB 154 (Constantinople); Yannopoulos 226; SB 1022; BMC 90-2 (Constantinople). VF, lightly toned. Only one example listed and plated in Yannopoulos. Rare.