Only the 2nd known example of this exact type (the other being in the Vienna museum).
Obverse: IMP C M AVR PROBVS AVG
Reverse: P M TRI P COS II P P = lion walking right; head of ox in front of the lion
BUST TYPE: B = Radiate, cuirassed bust right
FIELD / EXERGUE MARKS: -/-//XXIP
WEIGHT 2.82g / AXIS: 12h / WIDTH 19-21mm
MINT: Siscia