[Mel H]

Pinning down the nationality of an unmarked smallsword is always something of an enigma The component parts were available to furbishers from various sources and international trade was well established in the 18th C. Most of the makers / retailers engraved their details on the top scabbard mount, most of which are long since lost.
With regard to the sword being discussed, I have one which is engraved on the blade with a Dutch address, that has an almost identical crenulated silver grip.