Constantius II, AE4, Siscia.

CONSTANTI-VS PF AVG, rosette-diademed, draped, cuirassed bust right.
GLOR-IA EXERC-ITVS, two soldiers holding spears and shields with one standard between them, chi-rho on banner.
Mintmark: epsilon SIS crescent.

RIC VIII Siscia 91, rated common.

From Dane's collection, Sept. 2012.