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Constantine AE follis, Ticinum. AD 306-337. Struck AD 318. 3.62 g.

IMP CONSTAN-TINVS MAX AVG, Helmeted and cuirassed bust left, cuirassed, holding spear over shoulder.
VICTORIAE LAETAE PRINC PERP, Two Victories standing facing each other, holding a shield inscribed VOT PR, on an altar. 

Mintmark PT.  
RIC VII, 82
Rated R2.