Constans, AE follis, Siscia. AD 346-348. 

FL CONSTANTIS BEA C, laureate, draped and cuirassed bust right 
GLOR-IA EXERC-ITVS, two soldiers standing facing each other, holding spears and shields with one standard between them, o on banner. 
Mintmark: ASIS star. 

RIC VII Siscia 264.

Contributed by Forum Ancient Coins, online store, Sept. 2012.