NGC ( F ) Antoninianus of Constantius I Chlorus (AD 305-306) When the deathly ill emperor Diocletian abdicated in 305, he divided the unwieldy Empire into two sections, each with its own Augustus and its own Caesar—two men in the East, two men in the West. This new arrangement was called the Tetrarchy. As the Western Caesar, Constantius I presided over Gaul and Roman Britain. Constantius I or Constantius Chlorus was the father of Constantine the Great, the famous first Emperor to legalize Christianity after receiving a vision On his march to battle, Constantine is said to have had a vision in which "he saw with his own eyes the trophy of a cross of light in the heavens, above the sun, and bearing the inscription, 'In Hoc Singo Vinces' ('with this sign, you shall win'). Grade ( F ) Fine - Certified, Graded and Encapsulated by NGC You Will Receive the Same Type of Coin and Condition Shown , Certificate Number Will Vary As Stock Photos Are Used Free USPS Ground Advantage with Tracking and Insurance!