Bronze follis, 26mm, 6.82gm, issued AD 308-310 Nicomedia mint.
Obv: IMP C GAL VAL MAXIMIANVS PF AVG, Laureate head right.
Rev: GENIO AVGVSTI CMH (SMNĪ in ex.), Genius, wearing modius, nude, chlamys draped over left shoulder, standing left, pouring liquid from patera in right hand and holding cornucopiae in left hand.
References: Sear 14508, RIC 54a.
Deep chocolate patina, a beautiful example of a follis.