Hi Ariel,
I haven't seen this type of quillion before, or this type of decoration to the blade (the faint engraving). But because of the 'scallop' looking quillion ends and the shortish blade, I wondered whether this could be some sort of 'Naval Issue'.
The patina of the blade suggests 18thC to early 19thC and seems well made, not certain (due to patination) but looks to have laminations.
Regards David