Constantine I as caesar, AE follis of Aquileia.

CONSTANTINVS NOB CAES, laureate-helmeted, cuirassed bust left, 
spear over right shoulder, shield on left arm.
VIRTVS AV-GG ET CAESS NN, Prince on horseback, galloping right,
holding shield on left arm, and wielding spear at a kneeling 
enemy before the horse, a second enemy prostrate on ground.

Mintmark AQ Gamma.

RIC VI Aquileia, 91

Contributed by Glenn Simonelli, June 2014