Touch of Time Antiques has dated this piece to the Regency era.
Decorated in pattern no.

Felspar porcelain, introduced by Spode in the early 1820s, is noted for its refined appearance and durability, and was widely used for quality tablewares of the period.
Both plates bear Spode mark to the reverse, dating them to circa 1825-30.
Diameter: 25 cm
Condition:
Excellent. No damage, restoration, or crazing. Very light wear only.
A highly decorative and usable pair.
Touch of Time Antiques has dated this piece to the Regency era.
You can view the stock and full dealer information on the Touch of Time Antiques Profile Page