A very nice piece. Patina, tarnish.
Obverse: Emperor's head in laurel wreath, armor and paludamentum, to the right, in the rim legend:
IMP C VAL LICIN LICINIVS P F AVG;
Reverse: Jupiter standing left, holding long scepter and Victoria, eagle at his feet, surrounded by legend:
IOVI CONSERVATORI AVGG, in field A, in segment SMHT;
Bronze, diameter 22 x 23 mm, weight 3.68 g, axis 12 h.