Gillers Antiques Ltd has dated this piece to the Georgian era.
The foliate scrolling handle is reeded and decorated with a central flower motif.

Made by Joseph Angell I and fully hallmarked for London, 1817.
200.84 g / 6.46 t oz
10 cm tall to handle
6.5 cm diameter across the top
10.5 cm across from handle
Great antique condition. Maker's mark partially rubbed; it appears that silver soldering was done to the base of the mug at some point.
Gillers Antiques Ltd has dated this piece to the Georgian era.
You can view the stock and full dealer information on the Gillers Antiques Ltd Profile Page