To me this seems a British cut steel example c. 1790 as noted. These are especially intriguing as regarded as of the final days of the small sword, yet they have a magnificent austerity to them. The faceted steel of this example is one style which ran alongside many which had an almost mechanical looking beaded motif.
See : "The Smallsword in England" J.D. Aylward, London, 1945
Cap'n Mark, ya 'bout got my ticker with that Chinese zinger!!!