Very nice example, and I would agree, early 18th century most probably, and French if so assessed. I'm not sure of the Lhost reference, but have no reason to disagree as he is a well regarded writer on French weapons.
The hexagonal section blade is contemporary with this type of cross section well known in Germany with heavier arming blades (of the 'dragoon' type c. 1728). By the mid century the trefoil and colichemarde blades had come into fashion.
The presence of the fully represented pas d' ane rings and the general shape, configuration and pommel correspond to small swords of first quarter 18thc
Whether French or not is the catch. These civilian swords followed general and popular designs, and the English often favored Continental fashion and design.
Usually only specific provenance or sometimes inscriptions, or if precious metal present, assay marks, can determine nationality on most of these.
It appears that if, as often the case, there is inscription etc. on blade, and crisp photos or summary of wording and images of any marks or symbols,
more can be determined.
*** crossed posts...............OK, thats pretty good motto !!! Guess I WAY do not have to worry about stress
