Antique white ironstone oval drainer plate Grimwade

An early 20th century white ironstone drainer plate, with green transfer around the central hole advertising the product and brand:
 
The “Grimwade”
Hygienic Drainer
patent convex flutes
Bevel-ed holes
Provisionally Patented
 
The provisionally patented line at the bottom was later changed to Made in England after the patent was granted, making this an early example.
 
Dimensions:
29.8cm x 20.5cm
 
Condition:
There is a fine hairline running through the body at one end, but this does not reach the rim either side and is stable.