Identify this knife please

[Llasi]

Yes, it's from Albacete. Yes, the patern is "capaora". Little more I can say.
Tortoise? It can be acrylic.

 

[Llasi]

That "pommel" (?) is interesting. I wonder if it must have a specific purpose.

That piece is called "rebajo".
Join the two grips, no liners, "forros" in Spanish.

 

[Sharp & Fiery]

Thats a cool piece! Nice find.

 

[mwhich50]

I have a XXX large knife that I picked up in the Azores (Portugal) in the mid 80s. It has a similar locking system, and pins. My plastic handle coloration is different. The only writing on mine is INOX. It is not a Navaja style like yours. It is a definitely a straight forward locking utility knife, suitable for cutting large food items (9,5" blade).

Old Navaja, ratchet lock