Maximianus AE Antoninianus 285-308 AD, Siscia.

Obv: IMP CM A VAL MAXIMIANVS P F AVG, radiate, cuirassed bust right.
Rev: CONSERVATOR AVGG, Emperor, holding sceptre, and Hercules,
leaning on club,, face to face, sacrificing at altar.
Officina letter B in right field.
Mintmark XXIKOY

RIC V-II, 580; Cohen 71.

Courtesy of ephesus coins on vcoins.com, April 2007.