L. Julius Aurelius Sulpicius Severus Uranius Antoninus is a most enigmatic usurper who ruled Emesa and probably all of Syria for a short period of time around 253 to early 254 A.D. Ancient sources tells us nothing about him - save for Zosimus who mentions a usurper Uranius during the times of Elagabalus and Severus Alexander - either a different person or a confusion made by the historian. Fortunately, Uranius chose to date some of his coins with the Seleukid Era year EXF (565 = 254 A.D.). It is possible that he was a high priest or official in Emesa and led the resistance against a Sassanian invasion, being subsequently hailed by the troops. His Roman-style coins do not name him Augustus or Caesar. They are most likely an early donative for the troops and the lack of any title an attempt to escape the wrath of the legitimate Roman emperor. These coins are of exceptionally fine metal and weight for the era, and the extremely rare "denarii" struck from the aureus dies weight 8 grams and are about 90% fine silver! Besides these, Uranius also struck Eastern style coins: special fine silver tetradrachms, probably early in the reign, and regular billon eagle type tetradrachms and large bronzes ("Syrian sestertii"). We do not know if he struck the normal types simply following the custom, or if he was forced by resource depletion after issuing the fine quality early coins. It also worth noting that the reverse types of his coinage are quite varied and interesting. We do not know how his reign ended, but considering the rarity of the coins, it is likely that the new emperor Valerian lost little time before disposing of the usurper in early 254 A.D.