Constantine I, AE4, Thessalonica.

CONSTANTI-NVS MAX AVG, rosette-diademed, draped, cuirassed bust right.
GLORI-A EXER-CITVS, two soldiers holding spears and shields 
with one standard between them.
Mintmark: SMTSB

RIC VII Thessalonica 222 var (unlisted officina), rated R4.

From Dane's collection, Sept. 2012.