Justinian I. 527-565. AE half follis (27mm, 10 g). Antioch mint, dated RY 21 = 548/9. D N IVSTINIANVS P P AVG, helmeted and cuirassed bust of Justinian I facing, holding globus cruciger and shield, cross to right / Large K between A/N/N/O and XXI (date); above, cross; o over Π below.