Flavius Claudius Julianus, known also as Julian or Julian the Apostate, was Roman Emperor (Caesar, November 355 to February 360; Augustus, February 360 to June 363). Julian was the last non-Christian ruler of the Roman Empire and it was his desire to bring the empire back to its ancient Roman values in order to save it from "dissolution". He purged the top-heavy state bureaucracy and attempted to revive traditional Roman religious practices at the cost of Christianity. His rejection of Christianity in favour of Neo-Platonic paganism caused him to be called Julian the Apostate by the church. In 363, after a reign of only 19 months as absolute ruler of the Roman Empire, Julian died in Persia during a campaign against the Sassanid Empire.

Main Roman Coin Book and Other References:

RIC = Mattingly, Harold    The Roman Imperial Coinage
BMC = Coins of the Roman Empire in the British Museum
RSC = Seaby, H A    Roman Silver Coinage
RCV = Sear, David R    Roman Coins and Their Values
Cr = Crawford, Michael    The Roman Republican Coinage
SB = Sear, David R    Byzantine Coins and Their Values
S = Coins of England and the United Kingdom
WW = Wildwinds.com (reference & attribution site)