Constantine IV. Scarce Half-follis

Constantine IV; 668-685 AD. Constantinople, Half Follis, 8.50g. MIB-83Γ (Berk and Berlin only), struck over Follis of Heraclius, MIB-218, Thessalonica, c. 612-3 AD; Berk-721. Obv: Bust of emperor facing, wearing helmet and cuirass, holding cross on globe, legend at top and r. obscured by remains of undertype. Rx: Large K between [A/N/]N/O and CO/N, officina letter Γ below; at top, [A/]N/N/O and TES surviving from reverse of undertype. A half follis of Constantinople overstruck on a follis of Thessalonica issued over fifty years earlier, showing an increase of weight standard rather than the usual decrease.