Nicely preserved details.
Patina.
Obverse: bust of the emperor wearing a radial crown, armor and paludamentum, to the right, in the rim legend:
IMP C M CL TACITVS AVG;
Reverse: Emperor receives a globe from Jupiter, surrounded by legend:
CLEMENTIA TEMP, in section XXI;
Bronze, diameter 22 mm, weight 3.44 g, axis 11 h.