Follis - Valentinian I GLORIA ROMANORVM, Lugdunum

Valentinian I came to power in 364 AD through military election following the sudden death of Jovian, immediately splitting the empire with his brother Valens — a division that would never meaningfully reverse. The Lugdunum mint, modern Lyon, was among the most productive western facilities during his reign, largely because Valentinian spent much of his time on the Rhine frontier managing near-constant Alamannic pressure rather than governing from Rome.

He died in 375 at Brigetio, of a burst blood vessel reportedly triggered by his own rage during a diplomatic audience with Quadic envoys.