When word of Constans' fate got out Constantius II was too far away to be immediately effective. However, his sister Constantina was an ardent supporter of his and was able to incite a revolt in Rome on her brother's behalf. This gave rise to the short-lived rule of Nepotian. At her insistence she was also able to convince Vetranio to do the same. Unlike Nepotian, however, Magnentius resisted the urge to squash this impostor and instead tried to have Vetranio recognize him. Not much came of these talks because Constantius was by now nearby and he met Vetranio in person to discuss the situation. After their meeting was over Vetranio abdicated and retired as private citizen along with a generous pension from Constantius. This left Magnentius diplomatically isolated again and the two would confront each other in battle soon.
RIC 132, LRBC 1658 AE2 Obv: DNVETRANIOPFAVG, Pearl-diademed, draped and cuirassed bust right.
Rev: CONCORDIAMILITVM Exe: A/B/•TS(officina)•; Emperor standing left holding two standards inscribed with Chi-Rho.
RIC 277 AE3 Obv: DNVETRANIOPFAVG, Diademed, draped, cuirassed bust right.
Rev: HOCSIGNOVICTORERIS, Emperor standing facing, holding a standard and spear, Victory crowning him with a wreath and holding a palm.