... The legend is different letters, I see B right of ear and ...N Δ E left of ear ...
The B is some sort of issue number or year. In
RPC online (see my link above) they have Alpha and Delta (interpreted as years), on the coin here it is a Beta.
To the left of the ear I see clearly IΣINΔ (perhaps IΣINΔE), but you are free to see something different
.
Regards
Altamura