Anthony C Tirri Collection - Pedang Lurus

[Alam Shah]

Here are the pictures. (Sorry for the poor quality picture).

http://www.kampungnet.com.sg/modules...view_album.php

I'm wondering where does Tempius Jawa or Pedang Tusuk originated from?
What I know is, it's used in Central Java but I do not know how it got to its form, who uses it and other matters pertaining to this weapon.

And help or pointer would be appreciated. Thank you, in advance.

Alam Shah