Hexagram of Constantine IV

Obv.: Bust 3/4 facing, bearded, wearing cuirass and helmet with plume. In r. hand, spear held behind head; on l. shoulder, shield with horseman device. Rev.: Cross potent over globe on three steps. To l. and r., Heraclius and Tiberius, each wearing chlamys and crown with cross on circlet, and holding gl. cr. in r. hand.