A little bit late but this is a very nice kris blade! And like Jose I think that it is a Maguindanao kris but frankly said I have my problems to distinguish between Maguindanao and Maranao byself!
I only know that it is a Maguindanao kris from this thread:
http://www.vikingsword.com/vb/showth...highlight=kris since this kris from my collection has a very similar pommel and in the provided thread is also a discussion about this pommel form.
Regards,
Detlef