Probus AE Antoninianus, Ticinum mint, 281 AD
Obv.:VIRTVS PR - OBI AVG, Radiate, helmeted, cuirassed bust of Probus left, holding spear and shield.
Rev.:SECVRIT PERP / VI XXI, Securitas standing left, leaning on column, legs crossed, hand raised to head, in left field: I
RIC 526