A nicely preserved piece.
Obverse: head of Augustus in laurel wreath, to the right, in the rim legend:
CONSTAN-TINVS AVG;
Reverse: laurel wreath, in it the legend VOT/XX, in the rim the legend:
D N CONSTANTINI MAX AVG, in segment RQ;
Bronze, diameter 18 mm, weight 2.83 g, axis 5 h.