I suspect the
reverse is some sort of
Zeus. Tall nude guy with beard. Fairly common design in the East.
I don't think there is an
IMP, just an illusion. If you look carefully for the ring of dots you can see parts of it above the
head of
Zeus (?) and again to the right. You can then imagine where the missing bits lie and you see that the P of
IMP is actually among the rign of dots. Maybe the I and M are there or maybe they are just effect of wear too. In any case the
legend on such coins should be either around circumference or perpendicular to the figure (i.e. running roughly from from 12h to 6h).
A
legend running horizontally from 9h to 3h would be quite
rare.
Shawn