Constantine I
A.D. 316
21mm 4.3gm
IMP CONSTANTINVS P F AVG; laureate, draped and cuirassed bust right.
SOLI INVICT COM D N; Sol rad., stg. L., raising r. hand, Victory on globe in l., chlamys across l. shoulder.
in left field ✶, in right crescent.
In ex. RT
RIC VII Rome 49

This coin was issued during the first civil war with Licinius, that’s why there is the variation of the reverse legend and Sol holding victory.