The Mysterious Medieval Axe

I received an email from a web visitor (Max) about this beautiful axe. He bought it at an antique mall. And he is pretty sure the axe head is authentic, but he is not sure about the handle.

Do you have some experience or expertise with medieval weapons and/or axes? Can you shed some light on this axe? Feel free to send me an email. And I have more pictures too if you need more. My email: