What am I?

Cover the clues so you can only see number one. How many clues do you need before you know the answer?

1. I am from the Sepile River region in Papua New Guinea

2. I was once the leg bone of a cassowary - a large flightless bird.

3. My shaft (27cm long) has been shaped to a point.

4. I have a handle decorated with threaded braid. I also have a highly polished surface.

5. I am useful for hunting and for defence.

Answer in the next TreasureLink.