IMP
DIOCLETIANVS P F AVG (Translation: Imperator Diocletianus Pius Felix Augustus. Supreme commander (Imperator), Diocletian, the pious, the fortunate, emperor (Augustus).)
Reverse description
Jupiter, standing left, holding thunderbolt in right hand and sceptre in left hand; sometimes at foot, eagle.
Reverse script
Latin
Reverse lettering
IOVI
CONSERVAT (Translation: Iovi Conservatori. To Jupiter the Protector.)