OLD BARUNG 1

[tanaruz]

Hi friends,

from my father's collection.

1) tausug?
2) is this an example of a datu-class barung?
3) the kakatua crest- is this a junggayan type?
4) what could be the cause of the 'yellowish' color on the blade?
5) the marks on the blade are called 'laminations'?
6) possible era/age?


Note: the barung has a very thick spine


thanks

Yves