Licinivs I And Reverse Of Jupiter?

It is Licinius I. One way to tell is that the obverse legend ends with AVG (Augustus) and Licinius II was only a Caesar. Also, the bust is bearded and Licinius II died before he was 12, so he never had a beard.


Licinius I
A.D. 312- 313
IMP LIC LICINIVS P F AVG; laureate and cuirassed bust right.
IOVI CONSERVATORI AVGG NN; Jupiter standing left, right holding Victoriola, left leaning on sceptre, at feet left, an eagle with a wreath in its beak.
In ex. •TS•delta•
RIC VI Thessalonica 59

The book I have is really handy. There is a section with the emperors names as they are on the coin with an equivalent in English.