Note: this bust type (A) is very rare during the first issue of Rome in which A2 and B busts are predominant.
Extremely rare variant. Guillemain only cites 3 examples. Full original silvering.
Obverse: IMP C M AVR PROBVS AVG
Reverse: CONSERVAT AVG = Sol walking right, holding whip
BUST TYPE: A = radiate, cuirassed and draped bust right, seen from front
FIELD / EXERGUE MARKS: -/B//XXI
WEIGHT 2.92g / AXIS: 12h / DIAMETER: 20,5mm