Constantius II AE3 of Antioch. AD 337-341. 

CONSTANTIVS AVG, pearl-diademed head only right.
GLOR-IA EXERC-ITVS, two soldiers standing facing each other,
each holding spear and shield, one standard between them.
Two dots to left and right of the top of the banner.

Mintmark SMANBI.

RIC VIII Antioch 54; Sear 18003.

Leisa Waggoner's collection.