Your photo of the reverse is upside-down – the legend is VOTA PVBLICA – who’s on the obverse is a bit more challenging question, although it looks like one of the youthful Severans.
More books cracked: Geta, Caesar ( 198-209) [GETA CAES] PONT COS youthful bare-headed and draped bust of Geta Caesar, right, seen from behind. VOTA PVBLICA, Geta, togate standing left sacrificing over tripod altar. Struck 205, RIC 38b; RSC 230
Diameter: 19 mm