Another thing you may have noticed in my document are the four unused animations that follow the normal weapons - two bows and two arrows. The bows and arrows each share the same animation, meaning they were most likely intended to be used as a set and not equipped with a different bow and arrow as that would cause the wrong animation to be used if they were equipped in the left hand instead of the right.
Unused Animation 1 - 24170D05
It's kind of hard to see in this shot, but this animation is identical to the one used by the magic arrow spell.
Unused Animation 2 - 21171505
This one fires a sword at the enemy, similar to the dancing dagger spell but with swords instead of knives. Note that this is a unique hit animation, making an arrow use the normal sword graphic won't work like this does.

I mentioned this in the Fuma Shuriken topic but the first "dancing sword" animation's palette assignment is used by the dancing dagger spell.