276-282 AD. Antoninianus, 4.01g (12h). Ticinum, . Obv: VIRTVS P - ROBI AVG Helmeted, radiate, cuirassed bust left, seen from front, holding spear over shoulder and shield. Rx: PAX - AVGVSTI Pax standing left holding branch and transverse scepter, VXXI in exergue (officina 5), T in left field. RIC 517. C 427 (3 Fr.). Part of a "coded" series: the letters in the field, arranged in the numerical order of the officinae, spell out "EQVITI".