A very nice piece. Patina.
Obverse: bust of the emperor with uncovered head, wearing armor and paludamentum, to the right, in the rim legend:
P SEPT GETA CAES PONT
Reverse: Nobilitas standing right, holding scepter and statuette of Pallas, surrounded by legend:
NOBILITAS
Silver, diameter 19 mm, weight 3.3 g, axis 6 h.