539-540 AD., Justinian I., Constantinopolis mint, Æ Half Follis, Sear BC 165.

Justinian I., Constantinopolis mint, 1st officina,
Æ Half Follis / 20 Nummi (28-30 mm / 8.83 g), 539-540 AD.,
Obv.: DN IVSTINI - ANVS P P AVC , helmeted facing bust, holding globus cruciger and shield; cross to right.
Rev.: large K (value mark = 20 Nummi) between A / N / N / O and XIII (dated regnal year 13, 539-40 AD.), cross above, officina letter A beneath.
Sear BC 165 .