Justinian I - Pentanummium - Antioch ' AD 561-565

Obverse (Obv.): Diademed, draped, and cuirassed bust of Justinian I facing right, inscription:

D N IVSTINIANVS PP AVG (Dominus Noster Iustinianus Perpetuus Augustus – "Our Lord Justinian, Eternal Augustus")

Reverse (Rev.): The letter C (which represents the number 100 in Greek numerals, equivalent to 5 nummi) and a cross, symbolizing Christianity, which Justinian strongly promoted

Pentanummium - a bronze coin worth 5 nummi.

Justinian I the Great (Flavius Petrus Sabbatius Justinianus, c. 482–565 AD) was the Emperor of the Byzantine Empire (Eastern Roman Empire) from 527 to 565 AD. He is considered one of the most important rulers in history due to his ambitious legal, military, and administrative reforms.