Circulating Piece.
Obverse: bust of Caesar in armor and paludamentum, wearing diadem, to the right, in the rim legend:
CONSTANTINVS AVG;
Reverse: camp gate of 6 rows of bricks, with open gate, in the rim legend:
VIRTV-S AVGG; in section PCONST, in fields S-F;
Bronze, diameter 21 mm, weight 2.4 g, axis 6 h.