The actual view class used for that is a dagger class, if removed my manual change it will go back to original which is dagger. I didn't look too detail into this, it's somewhat weird that the view class is a dagger for this one but in game you see it is a 2h sword. I'll make it 2h sword for now.
But Warrior's Balmung (13020) is a dagger class and Warrior's Balmung (1533) is a mace class according view class.