The Fancy Fox has dated this piece to the Georgian era.
Unmarked but matches a teapot that I believe is by Miles Mason. The pattern interestingly appears very similar in design to the Spode patterns 878/893.

The cup measures 5.7cm (2 1/4") high, 8.2cm (3 3/16") rim to rim and 10.7cm (4 1/4") rim to handle. The saucer measures 13.5cm (5 1/4") wide and 3cm (1 3/16") high. Condition is very good with just a slight sliver chip to the inside of the foot of the saucer. No restoration and very light surface wear, there are a couple of craze lines in the glaze under the base of the saucer.
The Fancy Fox has dated this piece to the Georgian era.
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