AR Antoninianus 3.25g, 23mm, 6h
Colonia Agrippinensis, 257 CE
VALERIANVS P F AVG, radiate, draped and cuirassed bust to right / ORIENS AVGG, Sol advancing to left, raising hand and holding globe
RIC V.1 12 (Lugdunum) var. (bust type); MIR 868h; RSC 143a var. (same)
218 CE
Approximate birth year of Gallienus to Valerian and Mariniana.
253 CE
September
September
Valerian is proclaimed Emperor. At his urging, his son Gallienus is promoted to Augustus.
256 CE
Valerian II made Caesar under Valerian and Gallienus.
258 CE
Saloninus elevated to Caesar under Valerian and his father Gallienus.
258 CE
Ingenuus revolts against Gallienus and Valerian. Gallienus quickly meets him in battle and defeats him. Ingenuus is killed by his own guards or commits suicide.
259 CE
Regalianus revolts against Gallienus and Valerian. He is killed by invading Roxolani after ruling for six months.
260 CE
March
March
The Roman army under Valerian is defeated by Shapur I at the Battle of Edessa. Valerian is taken prisoner. Gallienus becomes the sole Emperor.