Probus BI Antoninianus. Siscia, 23 mm, 3.66 g. AD 278. 

IMP PROBVS P F AVG, radiate and cuirassed bust left, holding spear over shoulder.
VIRTVS AVGVSTI, emperor standing left, holding sceptre and crowning trophy; captive to left.

Mintmark XXIP. 

RIC V-2 805; Alföldi, Siscia V 91.3. 
very rare.

With permission of Roma Numismatics Ltd - E-Sale 107, Lot 1464, March 2023