Probus AD 276-282, AE Antoninianus (22mm, 4.15 gram) Siscia
IMP PROBVS PF AVG; radiate, cuirassed bust r.
PAX AVGVSTI; in r. field, Q; XXI in ex.; Pax standing left, holding branch and sceptre
RIC 713; very fine
Ex col. Frans Pouwel, Netherlands, collected since the ‘80’s.