Circulating piece in sand patina.
A very rare variety appreciated by the RIC authors with a high rarity grade of R4 meaning that 2-3 pieces of the variety were known to them.
Obverse: bust of Caesar in armor, wearing a laurel wreath, left, in the rim legend:
FL IVL CONSTANTIVS NOB C;
Reverse: camp gate of 6 rows of bricks, with open gate, surrounded by legend:
PROVIDEN-TIAE CAESS; in SMANTA section;
Bronze, diameter 20 mm, weight 3.43 g, axis 12 h.