Justinian I. Follis; Justinian I; Constantinople, Year 24=550/1 AD, Follis, 16.99g. Berk-218, Sear-163, DO-48b. Obv: Helmeted and cuirassed bust of Justinian I facing, holding cross on globe and shield; cross to r. Rx: Large M; cross above, date across field. Overstruck on uncertain type. The N in Justinian's name is engraved backwards.Green patination. EF