any other markings on the blade? looks like something about 1/4 the way down from the grip.
a quick search did not reveal anything on that sun marking near the hilt. i'm sure our other experts have much better reference materials tho.
many swords had blades made in solingen, and were hilted in other countries, such as france. curved hunting sabres/hangers were not the norm. looks a bit too simple for french tho
y'all liked them ornate back then.
i'm sure a ship's officer would have liked to carry a handy weapon like that tho. my initial impression was 18c but it's not really an area i'm very knowledgeable in.