Very rare. Guillemain only cited 3 examples. Virtually as struck and with full original silvering. Very rare in such an exceptional state of preservation.
Obverse: IMP C M AVR PROBVS P F AVG
Reverse: ADVENTVS PROBI AVG = Emperor riding on horse left, right hand raised, holding sceptre; captive at foot
BUST TYPE: A = Radiate, draped and cuirassed bust right, seen from front
FIELD / EXERGUE MARKS: -/-//RΔ
WEIGHT 4.32g / AXIS: 6H / DIAMETER: 21-22mm
