The reverse of this denarius may refer to the deification of Julius Caesar or Ludi Apollinares which took place from July 6 to 13 each year.
Ex. Naville Numismatics, 2015.
Roman Republic
P. Clodius M.f. Turrinus (42 BC), Denarius 42 BC, Rome mint
Obverse: head of Apollo right, lyre behind
Reverse: Diana Lucifera standing right, bow and quiver over shoulder, holding lighted torch in each hand
P CLODIVS M F
Diameter 21 mm, weight 3.46 g