First, thank you all for comment! I agree, it seems to be a clearly lamination what we can see by some pictures. Either this dagger coming from a well cared collection or it is in an outstanding good original condition. Would be interesting to know this since it would give us some understanding about if laminated blades from Luzon get etched originally.
Ian and Jose, thank you both very much for your age and origin guesses. Yes, I gree that this dagger coming from the First Republic area and could be an Ilocano piece. An other origin could be Cental Luzon like Ian suggest as well, a possibility also because the strong Spanish influence in the hilt.
I am happy that my age guess was most probable correct. I've searched in old threads but don't find a similar one for comparison, appearance and size.
When someone would be able to show a similar one I would be very grateful.
Best regards,
Detlef