This pretty Davenport plate is 7-1/8" (8 cm) in diameter. The underglaze blue pattern has hand colored overglaze enamels in pink, yellow, orange, green, and gold. It dates 1805-1820 per Godden's mark 1183, which is printed in blue: DAVENPORT STONECHINA . The pattern number 659 is handpainted in puce, and the numbers 3-65 are impressed.
This pattern is shown on a stone china soup plate in "Davenport China, Earthenware & Glass, 1794-1887" by Lockett & Godden, page 117, #89, where it is compared with the similar Davenport pattern #568 which was used on bone china wares.
Condition? It rings when struck, so no cracks or hairlines. There is some wear to the surface at stacking points, and there are utensil marks. Also, a small chip to the edge which is more easily felt than seen. See the close-up photo below, at the pink flower, with the chip being at the blue tendril which extends to the edge. I also have available one 6" plate in this pattern.