Bronze, Constaninople, Justinianus I, Year 13, 540 CE

Bronze, Constaninople, Justinianus, 1 Follis, 540 CE

Obverse, Our Lord, Justinianus I, Father of the Country, Emperor-in Latin abbreviations

Reverse, 13th year of his reign, Carthage mintmark in the exergue

Text, Obverse and Reverse alternate every 20 seconds.

Based on Furmaniac coding.