Constantine I, AE Follis, Ticinum, 314-315 AD.

Obv: IMP CONSTANTINVS PF AVG, laureate and cuirassed
bust right.
Rev: MARTI CON-SERVATORI, Mars standing right, helmeted, 
and in military dress, cloak over right shoulder, holding 
upright spear, point downwards, left hand resting on shield.

Star in left field.
Mintmark TT
RIC VII Ticinum 12, rated R5

Contributed by Glenn Simonelli of Fel Temp Coins. Feb. 2011.