Constantine IV (AD 668-685), Gold Solidus, 4.4 gms., mint of Constantinople, DN CONSTANS P, helmeted and cuirassed bust, three-quarters facing to the right, spear over right shoulder, shield on left, rev. /KVICTOA AVGV D/k, cross potent on three steps between standing figures of Heraclius and Tiberius, CONOB in exergue (DO 10), extremely fine