here;s an obverse brockage of Constantine from Lyon
Constantine I
A.D. 320
17mm 3.6g
CONS-TANTINVS AVG; high crested helmet (bowl shaped) and cuirassed bust right.
For reverse see--
VICTORIAE LAET PRINC PERP; two Victories stg., facing one another, together holding shield inscribed VOT PR on altar.
in ex. P [2 captives] L
RIC VII Lyons 79