Maxentius, AE half-follis of Ostia, AD 309-312. 22 mm, 2.89 g.

MAXENTIVS PF AVG, Helmeted, draped and cuirassed bust left holding spear over shoulder, and shield on left arm.
VICTORIA AETERNAE AVG N, Victory standing right, left foot 
on the base of a cippus, inscribing VOT X onto a shield 
affixed to the cippus. Captive sitting left at foot left.

Mintmark MOSTT. 
RIC VI Ostia 61.

With permission of Roma Numismatics E-Sale 28, Lot 726, July 2016.