Strange blade on italian(?) old sword / B V mark

[francantolin]

Hello dear members,

I wanted to ask you some questions to identifiy this strange sword:

I think it's a real old sword,the hilt has an italian storta shape but the blade is really strange: large and short and is really flat.

Is it an italian item ( medieval ? how old ?? )

Could it be an executioneer's sword ?

Has the blade been shortened ? Or a later change ??

Does someone know the symbol-marks and the B V


I'll post later other pictures of the blade

Kind regards