Antoninianus of Postumus, 260-268, Trier mint, SERAPI COMITI AVG type, “Serapis is my companion,” referring to the Greco-Egyptian god Serapis. Following the revolt of the city of Mainz, Marius, a former blacksmith by trade who had risen through the ranks of the Roman army to become an officer, was raised on a shield and acclaimed Augustus by the assembled troops. Tradition has it that the emperor Postumus had refused the expectation of the troops that they would be able to plunder Mainz, hence they revolted and killed him. Listed among the 30 Tyrants by the Historia Augusta he moved to Trier in Germania to solidify his power base. A character of low birth according to Edward Gibbon, nevertheless Marius possessed the virtues of blunt honesty and matchless strength. However, the Praetorian prefect Victorinus, who had served under Postumus, came into conflict with Marius and the latter was executed, ending a reign that was supposedly just a few days according to the chronicler Aurelius Victor. Clearly, however, his reign was somewhat longer as he managed to strike a significant quantity of antoniniani and a lesser number of aurei in his name, though his coinage is scarce. Below is a coin of Marius recently procured from JAZ Numismatics (@John Anthony) ex the @Sallent collection. Marius, AD 269. AE Antoninianus. 17Mm, 2.6g, 6h; Mainz or Trier, AD 269. Obv.: IMP C M AVR MARIVS AVG Radiate, draped and cuirassed bust right. Rev.: VICTORIA AVG Victory advancing right, holding wreath and palm frond. Reference: RIC 18. From the Sallent Collection. Thanks for looking. Please share any coins of this short-lived usurper or other types of the Gallic Empire.