This coin is not in RIC with this bust type, obverse and reverse legend...it should be listed before Trier 226. The helmet is not typical of this issue either- note the plume, it is very fancy.
Constantine I
A.D. 319
19mm 3.3gm
CONSTAN-TINVS AVG; helmeted and cuirassed bust right.
VICTORIAE LAET PRIN P; two Victories stg., facing one another, together holding shield inscribed VOT PR [VOTA POPULI ROMANI (vows of the Roman people)] on altar.
in ex. dot PTR
RIC VII Trier 223
