Flavius Julius Constantius(Greek: Κωνστάντιος; 7 August 317 – 3 November 361), known as Constantius II, was Roman emperor from 337 to 361. His reign saw constant warfare on the borders against the Sasanian Empire and Germanic peoples, while internally the Roman Empire went through repeated civil wars, court intrigues and usurpations. His religious policies inflamed domestic conflicts that would continue after his death.
Constantius was a son of Constantine the Great, who elevated him to the imperial rank of caesar on 8 November 324 and after whose death Constantius became augustus together with his brothers, Constantine II and Constans on 9 September 337.
(Retrieved from https://en.wikipedia.org/wiki/Constantius_II).
The reverse shows an emperor standing left, holding a spear and a globe
The portrait is of Constantius II pearl diademed draped