Constantine I, AE follis, Siscia, 317 AD.

IMP CONSTANTINVS AVG, laureate, cuirassed bust right.
SOLI INVI-CTO COMITI, Sol standing left, chlamys across left 
shoulder, holding globe, right hand raised.

Star in left field.
Mintmark Gamma SIS

RIC VII Siscia 34, rated R5 - extremely rare.

With permission of Titiana & Slavey Art Numis, March 2012.