Constantius II, Constantinople, 337-341 AD.

DN CONSTAN-TIVS PF AVG, rosette and pearl diademed head right.
GLOR-IA EXERC-ITVS, two soldiers holding spears and shields 
with one standard between them. O on banner.
Mintmark: CONSS

RIC VIII Constantinople 43, rated C3.
(Note: the last S in the mintmark is actually a digamma, 
denoting officina 6.)

Contributed by George Clegg (biggyg2), May, 2012