538-539 AD., Justinian I., Constantinopolis mint, Æ Follis, Sear BC 163.

Justinian I., Constantinopolis mint, 2nd officina,
Æ Follis / 40 Nummi (39-41 mm / 22.69 g), 538-539 AD.,
Obv.: DN IVSTINI - ANVS P P AVC , helmeted facing bust, holding globus cruciger and shield; cross to right.
Rev.: large M (value mark = 40 Nummi) between A / N / N / O and XII (dated regnal year 12, 538-9 AD.), cross above, officina letter B beneath, CON in ex.
Sear BC 163, DOC I 37b ; MIB I 95a .