Byzantine
JUSTINIAN I, (527-565 AD),Constantinople mint, issued year 14 = 549-541
AE Follis (41.5mm 21.05g)
Obv: Justinian bust facing, DN IVSTINI ANVS PP AVC,
Rev: M, B below, year X/II/II, CON in exergue, large thin flan,
S.163, DOC.39b, BMC 52.