Justinian I, AE Follis, 557/558, Year 31, Constantinople, Officina 2D N IVSTINI_ANVS P P AVGHelmeted, cuirassed bust facing, globus cruciger in right hand, shield in left, cross in right fieldLarge M, A/N/N/O to left, cross above, X / X / X / I to right, B below CON in exergue 31mm x 33mm, 17.84g