IMP
DIOCLETIANVS P F AVG (Translation: Imperator Diocletianus Pius Felix Augustus. Supreme commander (Imperator), Diocletian, the pious, the fortunate, 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
-/-//XXIT (Translation: Iovi Propugnatori. Jupiter, the defender.)