NGC ( XF ) Roman AE3 of Valens ( AD 364-378) Valentinian I , sometimes called Valentinian the Great, was born in 321. He was Roman emperor from 364 to 375. Valentinian ruled the Western half of the empire, and his brother Valens ruled the East. In 378, Valens was defeated and killed at the Battle of Adrianople against the Gothic invaders. Valens is best remembered by history for the construction of the aqueduct that supplied water to Constantinople, the Eastern empire's capital city, for over a thousand years Grade: ( XF ) Extremely Fine - Certified, Graded and Encapsulated by NGC Comes with COA ( Certificate of Authenticity ) & Historical Information Card 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!