280 AD., Probus, Siscia mint, Æ Antoninianus, RIC 706.

Probus, Siscia mint, 7th emission, 1st officina,
silvered Æ Antoninianus (20-21 mm / 3.34 g), 280 AD.,
Obv.: IMP C PROBVS P F AVG , radiate and cuirassed bust of Probus right.
Rev.: PAX AVG / P / XXI , Pax standing left, holding olive branch and transverse scepter, P = officina 1 in r. field, XXI in exergue.
RIC 92, 706 Bust Type F ; C. 402 ; Pink 53, 7 ; Alföldi type 41, n° 17 .