I would reiterate what others have already said; just because there are composite elements here, that doesn't mean this wasn't a 'working model'. As I'm always the dude that perpetually brings up 'Spanish colonial', I would again suggest this might be such a piece made from an assemblage of available parts on the frontier. The cup/bowl and guard/knuckle bow appear to be classic munitions-grade military, the pommel from an earlier piece. The blade is a puzzle, but also fascinating and has an amazing pattern. I am in agreement that the blade appears more European and of the classic shape for these type swords. The blade made in a forge in one of the Spanish colonies to proper shape, but in the local fashion? This isn't uncommon at all. The only thing that detracts for me is the wire grip. I'd pickle the metal black if it were mine...
A great piece none the less!