Dear Mark, thank you very much for the research effort.
I had an inkling it might be Dutch. I now hesitate to make suggestions as to identification, as every thing I have posted here has turned out to be something different from what I thought.
I once had a Dutch sabre with a similar brass hilt and projection in the pommel cap, bought in Switzerland, with running-wolf blade snapped in the middle, with a vellum tag attached inscribed, 'Villmergen 1720', or something similar.