Constantine I, AE follis, Siscia, AD 318-319.

IMP CONSTANTINVS PF AVG, helmeted, laureate and cuirassed bust right.
VICTORIAE LAETAE PRINC PERP, Two Victories standing facing each other, holding a shield inscribed VOT PR, on an altar marked with a S. (Helvetica type 6f)

Mintmark Epsilon SIS dot

RIC VII Siscia 73 var (officina).
Rated R5.

Dane's collection C1066, Feb 2017.