Hi,
Well, it seems to be hard soldered but still very spurious with one of essential marks missing. Solder line is spurious, too, having visible flaws. The cup is not very consistent with George III early 19th century.
This London 1808 goblet emerged in West Midlands, no maker`s mark, almost the same decoration and spurious solder line. It was estimated and offered at the fraction of the price for fully marked George III goblets of the same period.
An excellent article on spurious British silver is here:
http://www.925-1000.com/a_Spurious1899.html
This is my opinion and I may be wrong.
Best wishes
![Image](https://www.925-1000.com/pics/Ximg.jpg)