On that surviving falchion/cleaver, which is not in too bad of a condition, there is no crossguard left, but where it should be, there is a tiny hole, clearly for a pin or rivet. It strikes me as quite peculiar: I am not aware of any crossguard secured by such a pin, but it's a kind of technical detail I might simply be ignorant of for not having a deep enough knowledge.
So I'm asking you, more knowledgeable folks, if you ever heard of a pinned crossguard on a medieval sword.


Detail of the pin hole.

The complete falchion/chopper. [ Download ]