Thanks Pekka.
It looks like the Cartage coin, however the design seems to be more
barbaric then classical. It is highly corroded so it is hard to tell...
The coin and the dirt it was in do not go well together...
I have highlighted the design lines that are visible if you
flip the coin in hand, I'm not sure if they are result of the corrosion or if they were
part of the design, though they look intentional.