Help Identifying a War Club or Axe...

I picked this up at an estate sale today. The owners spent 30 years as missionaries in Japan in the 60s-70s. The tag said "Papua New Guinea War Club". I am thinking it is probably an axe rather than a war club.

It seems more utilitarian than others I have seen. Also the iron blade seems somewhat unique.

Does anyone know what this is? HELP! :)

Sago Pounder

Thanks for the information, Hottiki!

Any guesses on age or where i could find more information?

I paid $95 for it, did I over spend?

Thanks!

Stone and bone blades older than metal. Googgle-up, there is tons of info. Cost ?...I'd rather have a vintage PNG Pounder
than a two and a half by six inch piece of green paper.

Good point. Thank you :)