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.
Reverse script
Latin
Reverse lettering
IOVI
CONSERVAT AVG (Translation: Iovi Conservatori Augusti. To Jupiter, protector of the emperor (Augustus).)