Hi Robert,
I think that Carlos could be spot on. I did a Google and found a number of Spanish 1881 model military machetes. here is one interesting link in Spanish:
http://www.catalogacionarmas.com/pub...stintivo-3.pdf and
http://www.catalogacionarmas.com/pub...machetes-2.pdf
But where is the maker's stamping?
However, the hand guard is very different and this brings us back to the re-hilting. I looked around and did not find a single hand guard with quillons featuring those two groves, yet your other dagger has them, so there is a commonality that is hard to ignore. Not only the quillons, but also the pommel cap/disc and the general appearance of the handle.
Could be as Gonzalo suggested, that the hand guard was made entirely by hand, but reflecting a well practiced regional style.
Cheers
Chris