New to this...research so far has turned up ...best guess 115/114 bc m.cipi m.f or 136 b .c serveili m.f
Looks a lot like mine: Roman Republic Moneyer: M Cipius M.f. AR Denarius 115-114 BCE Helmeted head of Roma, mark of value X (10 Asses) Victory driving fast Biga, holding reins and palm branch, rudder below, ROMA in ex (partial off-flan) Sear 166 AUTH Crawford 289/1 Fairly common Republic Denarius. Yours appears to be a Fouree (contemporary imitation), with the green at the top obv, and the flaking silver plating at 9:00 on the reverse. There is a little collector value in Fourees. Wow! I just found this comment on ACSearch.info when further researching... “This moneyer has been identified with a certain Cipius, who gave rise to the proverb ‘Non omnibus dormio’, and who was called “the snorer” because he pretended to be asleep in order to facilitate his wife’s acts of adultery.”