Justinian I (527-565) AE Follis (Bronze, 35mm, 19.31g) Cyzicus 2nd officina, Dated RY 21 (AD 547/8).
Obv: Helmeted and cuirassed facing bust, holding globus cruciger and shield; cross to right
Rev: Large M; cross above, A/N/N/O X/X/II (date) across field; B//KYZ.
Ref: Sear 207