Circulating piece of a huge rarity of the variety.
Coin by the authors of the RIC catalog appreciated by the degree of rarity R5 denoting a single known piece.
Obverse: bust of Caesar in armor and paludamentum, wearing a laurel wreath, to the right, in the rim legend:
CONSTANTINVS IVN NOB C;
Reverse: camp gate of 8 rows of bricks, with open gate, in the rim legend:
PROVIDEN-TIAE CAESS; in the field above the gate *, in segment -SMHDelta-;
Bronze, diameter 19 mm, weight 2.71 g, axis 6 h.