Constantine I, AE follis, Aquileia. 3.8g, 20.2mm

CONSTANTINVS PF AVG, laureate, cuirassed bust right.
MARTI CON-SERVATORI, Mars, helmeted, with chlamys hanging
down behind, standing right, holding upright spear, point 
downwards, left hand on shield.
Mintmark AQP

RIC VI Aquileia 141, rated Rare.

Sold on ebay, August 2008.