Very rare and desirable bust type.
Unpublished variant!
Obverse: IMP PROBVS P F AVG
Reverse: SALVS AVG = Salvs standing feeding serpent
BUST TYPE: E2 = radiate, cuirassed and helmeted bust left, seen from rear
FIELD / EXERGUE MARKS: -/V/-//XXI
WEIGHT 4.38g / AXIS: 6h / DIAMETER: 21-22mm
