It's Spanish.
Made in Albacete in I'd guess the later 19thC.
Very nice to have it's original scabbard and locking sprung pin.
I believe that those who collect these and wish to obcess over categorising the individual types (Like me but I don't have one of this type
) Categorise this particular type as 'type C'.
It's a very nice example and would sit well with my types A and B if you ever want to find a new home for it!
I did some investigating of these because I love mine so much, I'm sure I'll have saved some pictures somewhere. I'll have a look and get back to you.