I have this follis of Maximianus which has me a bit puzzled.
I have found a somewhat similar coin, with
no mint mark, from Alexandria, but the obverse legend is different.
OB: Laureate head right - IMP C M A MAXIMIANVS AVG
REV: Genius standing left, holding patera and cornucopia - GENIO POPVLI ROMANI
S in left field and Greek gamma in right.
27 mm. in diameter with weight of 9.22 grams.
Any attribution help would be appreciated.

