Augustus was an ancient Roman title given as both name and title to Gaius Octavius, Rome's first Emperor. On his death, it became an official title of his …
A Roman coin featuring the emperor Diocletian and the title Augustus on the right
A coin of the late 3rd century emperor Probus, showing abbreviated titles and honorifics – IMP·C·PROBUS·INVIC·P·F·AUG
A late Byzantine example of Augustus in imperial titulature: in this miniature from ca. 1404, Manuel II Palaiologos is titled "basileus and autokrator of the Romans", but also "aei augoustos" ("always augustus"), after the late antique formula "semper augustus".