CONSTANTINVS P F AVG (Translation: Constantine pious fortunate augustus)
Reverse description
Mars, helmeted, draped, cuirassed, standing front (sometimes head right), leaning on reversed spear with right hand and placing left hand on shield. Mintmark in exergue
Reverse script
Latin
Reverse lettering
MARTI
CON-SERVATORI (Translation: To Mars, protector of the homeland)