Are you looking at it backwards? I think the axe looking part is a guard for the hands. See how it's held: https://en.wikipedia.org/wiki/Hook_sword https://en.w

Are you looking at it backwards? I think the axe looking part is a guard for the hands. See how it's held: https://en.wikipedia.org/wiki/Hook_sword https://en.wikipedia.org/wiki/Hook_sword