Ancient Byzantine Coins - Justinian I - Large M Follis. 527-565 AD Constantinople mint. Obv: IVSTINIANVS P P AVG legend with helmeted and cuirassed bust facing holding globus cruciger and shield, cross to right. Rev: large M with A / N / N / O left and X / Y / III right, cross above and A below; mintmark CON in exergue. Sear 163. 19.08 grams. ("). Very fine.