Thank you Altamura. On second look, you are right - despite the figure's general posture resembling
Hercules, the object in figure's left hand is too short for a club, and besides, while I thought that the object behind the
head was an excess letter, it indeed is the
kerykeion (
caduceus) and then everything makes sense,
Hermes it is.
This coin must be
rare. It is 20-21mm and weighs below 4g.