Justinian I (527-565). AE Follis, Constantinople mint. Dated RY 13 (539-540). Obv. Helmeted and cuirassed bust facing, holding globus cruciger and shield; to right, cross. Rev. Large M between A/N/N/O and X/III; above, cross and below, E; in exergue, CON. MIB 95b; D.O. 38; Sear 163. 22.50 g. 42.00 mm. About VF/VF.