A nice piece with well preserved details.
A very rare variety appreciated by the RIC authors with a high rarity grade of R2 meaning that 7-10 pieces of the variety were known to them.
Obverse: bust of Caesar in armor and paludamentum, 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, in the rim legend:
PROVIDEN-TIAE CAESS; in section SMALB;
Bronze, diameter 20 mm, weight 3.49 g, axis 12 h.