The dress of this dagger, with its deity hilt and scabbard typical of the Visayas, suggest that this one comes from the central Philippines. While the deity hilt might indicate western Visayas, the scabbard is more reminiscent of the eastern Visayas. The blade style is definitely of western influence, probably Spanish.
Speaking of Zel's double-head hilted deity dagger, here is a link to a previous thread:
http://www.vikingsword.com/vb/attach...tid=4950&stc=1
It is the dagger at the bottom. The ricasso looks quite similar to the example posted above.