Probus AE Antoninianus. Siscia.

IMP C M AVR PROBVS P F AVG, radiate, mantled bust left, holding eagle-tipped sceptre.
ADVENTVS PROBI AVG, Probus on horseback left, holding
sceptre and raising right hand, captive beneath horse's
front hooves.
XXIV in exergue.

RIC V-2 Siscia 632

Sold for 700 Euros.