Constantine IV. Decanummium; Constantine IV; 668-685 AD. Constantinople, c. 669 AD, Decanummium, 3.56g. Berk-725, MIB-88, Sear-1182. Obv: Legend off flan or not struck up, Bust of emperor facing, beardless, wearing helmet and cuirass, holding [cross on globe] (off flan). Rx: Large I between cross and K, another cross above, [CON] in exergue.Some areas of flat striking.. EF