Congrats, Rasdan - that's definitely a keeper!
Just adding my 0.2 cents:
This blade looks 100% Maranao to me. I don't see anything which would indicate Tausug (much less Buginese) influence. What did I miss?
Safe of the twisted core forging, are there any hints for it being older than, say, 2nd half of 19th century?
Regards,
Kai