Upvote:2
The idea of a short spear, with a relatively long blade in comparison to the shaft, appears elsewhere in history. The specific design differs, to understand the possible usage look at the iklwa (Zulu stabbing spear) or possibly a short naginata (Japanese).
The iklwa has a leaf-shaped blade and a straight shaft. It does have a kind-of-knob or protrusion at the end like the picture you have shown, but not angled.
The naginata is often longer and it has a curved blade, but some have a shaft only as long as the blade.
These weapons were not mainly thrown, they were used to stab or cut.