Langham's research shows it would be 1802ish, as the only time Drury listed as his majesty. A goldsmith, etc. What I believe to be a similar situation is my rather plain saber but fire gilt.
A great sword shown here! I have also seen rougher castings.
I was struck by a sidebar of design and style. I would be remiss not to mention Speltz's drawings. Some annotations are now wrong but he was working with known knowledge at the time and supplied appendices and a bibliography.
https://archive.org/details/stylesofornament00speluoft
So, my Thurkle, and an 1821/45 ('69 Wilkinson) I had to have. Plenty of half baskets got fancy. Even Edward Popham and his kastane saw a lot of styles. photo from the Royal Armouries
Cheers
GC