Byzantine
Justinian I (527-565 AD). Carthage. Dated RY 13 (539/40).
AE Follis (53mm 21.26g)
Obv: D N IVSTINIANVS P P AVG. Helmeted, draped and cuirassed bust facing, holding globus cruciger and shield decorated with horseman motif; cross to right.
Rev: Large M; A/N/N/O - XIII across field; cross above, SO below; KAR.
Sear 260.