Hi 'Nando
,
sorry, my friend, I believe this is a carpenter's side axe ....used to smooth the surface of wooden beams, planks etc.
These are usually 'handed' ie designed to be used exclusively one handed .....so made either for right handed use or left (but not both).
Tha axe blade is usually 'off centre' to the shaft. The welding looks suspiciously like arc welding which has been ground/filed down.
Kind Regards David