673-674 AD., Constantine IV, Constantinopolis mint, Half Follis, Sear 1179.
Constantinus (Constantine) IV (`Pogonatus´, 668-685), Constantinopolis mint, officina 4, dated regnal year 20 = 673-674 AD.,
Half Follis (26-29 mm / 7,81 g), copper, axes coin alignment ↑↓ (ca. 180°),
Obv.: no legend, helmeted, cuirassed facing bust, beardless, his right holding globus cruciger.
Rev.: large K at center (serving as mark of value "20 nummi" and regnal year 20); [A]/N/N/O to left, mint mark CO/N to right; officina mark Δ below.
Sear BC 1179 ; DOC II 35d ; MIB III 83 .
Constantine IV (Greek: Κωνσταντίνος Δ', KÅnstantinos IV, Latin: Constantinus IV) (c. 652 – September 685), sometimes incorrectly called Pogonatos, "the Bearded", out of confusion with his father, was Byzantine Emperor from 668 to 685. His reign saw the first serious check to nearly 50 years of uninterrupted Islamic expansion, while his calling of the Sixth Ecumenical Council saw the end of the monothelitism controversy in the Byzantine Empire.