Probus BI Silvered Antoninianus (Silvered bronze, 4.89g, 21mm) Siscia, 276.
Obv: IMP C M AVR PROBVS AVG, radiate, draped and cuirassed bust to right
Rev: CLEMENTIA TEMP, emperor standing to right, holding sceptre, receiving globe from Jupiter, standing to left, holding sceptre; A below, XXI in exergue.
Ref: RIC V.2 644 var. (rev. type);