No, not necessarily. Treskantos is the term used for a 3-sided dagger, but not limited to Pangasinan. Treskantos blade profiles can be found throughout Luzon and the Visayas. The popularity of the treskantos is due to the fact that the flat side offers more surface area for blade contact to use in blocking and parrying in certain espada y daga techniques.
The rest of this particular dagger (scabbard, hilt, crossguard, etc.) exhibit Pangasinan characteristics.
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