IMP C
VAL DIOCLETIANVS AVG (Translation: Imperator Caesar Valerius Diocletianus Augustus. Supreme commander (Imperator), Caesar Valerius Diocletianus, emperor (Augustus).)
Reverse description
Jupiter, walking left, head right, holding thunderbolt in right hand; sometimes to left, eagle.
Reverse script
Latin
Reverse lettering
IOVI PROPVGNAT
-/-//PXXIT (Translation: Iovi Propugnatori. Jupiter, the defender.)