A nice piece. Patina.
Obverse: emperor's head to the right, in the rim legend:
IMPT AELIVS CAE-SAR ANTONINVS;
Reverse: Pietas standing left, blesses over altar, in fields S-C and PIE-TAS, in rim legend:
TRI P-OT COS;
Bronze, diameter 31 x 33 mm, weight 25.64 g, axis 6 h.