Gillers Antiques Ltd has dated this piece to the 1800s.
The handle is decorated with gilding, and the rims are elegantly accented in gold.

Grainger’s Worcester, founded in 1801 by Thomas Grainger and John Wood in Worcester, England, was renowned for its finely detailed porcelain. Its exceptional translucency, intricate hand-painting, and innovative techniques earned Royal recognition in 1839 with a Royal Warrant from Queen Adelaide. This allowed the company to use the title "Royal Porcelain Works," cementing its prestige among collectors.

The Victoria and Albert Museum in London holds 10 works by Grainger & Co, Worcester, including a similar mug: https://collections.vam.ac.uk/item/O334777/mug-grainger--co/.
Dimensions:
Height 11.5 cm
Width 15 cm

Depth 11.5 cm
Weight 463 grams
Condition: Minor scuffs on the top rim, otherwise in excellent antique condition.
Please carefully review the photographs, as they form an integral part of this description. Feel free to contact us with any questions. The item will be securely packed and shipped with full tracking and insurance. Shipping costs include labour, packaging, and postage.
Gillers Antiques Ltd has dated this piece to the 1800s.
You can view the stock and full dealer information on the Gillers Antiques Ltd Profile Page