A nice piece of a rarer typological item.
Patina.
Obverse: bust of the emperor wearing a laurel wreath and armor, to the right, in the rim the legend:
ΝΕΡΩΝ ΚΑΙΣΑΡ ΣΕΒΑΣΤΟΣ;
Reverse: eagle holding a bundle of thunderbolts in its talons in front, with its head to the right, palm branch in right field, legend in left field:
ΒΙΡΙ, in section ΕΤΟΥΣ;
Silver, diameter 25 x 26 mm, weight 15.1 g, axis 12 h.