Constantine I A.D. 335 CONSTANTI-NVS MAX AVG; rosette-diademed, draped and cuirassed bust right. GLOR-IA EXERC-ITVS; Two soldiers helmeted, stg. facing one another, reversed spear in outer hands, inner hands on shields resting on the ground; between them two standards. in ex. •CONSA• RIC VII Constantinople 80 Constantine I, also known as Constantine the Great, was the first emperor to convert to Christianity. Constantine started his career by fought the Persians in the eastern provinces until he was recalled in AD 305 to join his father in Britannia. When his father died in AD 306, he became an emperor in the tetrarchy (when Rome was divided into multiple rulers). In AD313, following civil war, Constantine emerged as the emperor of all of the Roman Empire. During his rule, he separated military and civil authorities, introduced the solidus, influenced the AD 313 Edict of Milan (legalizing Christianity), founded Constantinople in AD 324 (then it was called Byzantium). Constantine was the first ruler of the Byzantine Empire. Special thanks to @Victor_Clark for helping me ID this coin so I could learn about it!