Hi Fernando,
thanks
the blade type flat oval to hexagonal was very common for Dutch small swords from the first half of the 18thC. also the star disappeared after approx 1750.
the 18thC Dutch sword makers usually signed there blades not with a stamped mark but with a script. name and address of the shop see picture (jean Hosse Mr swaartveger op de vijgendam tot Amsterdam).
your blade has a stamp GH.
there was a silversmith named Gerrit Hoying who made a lot of beautiful silver hilts for small swords. not the blades but just the hilts.
It can be that your blade has been delivered (by another fourbiseur) to the silversmith with the initials GH.
best regards