It´s an interesting hybrid: with a length of 77cm it has a dimensions of short sword, rather than a dagger. Still, the handle construction would point to an opposite direction. Plus, it combines a Y-shaped, forked pommel that could be found on some baselards, with a cinquedea-style cross-guard, composed of two halves joined at the end (were they forged / forge-welded?)
The blade seems to have a diamond cross-section, with a short fuller, so it could be rather rigid (from these pictures, it´s hard to say how thin it is). I´d be interesting to try how it feels in hand and what are the stats (POB etc.) Have you seen any similar piece, probably with a better description?
Btw, I have zoomed ad details on HH website and it really does not look like a composite piece.
