We have an early Royal Doulton Flow Blue Charger Plate. From the Castles & Churches production, numbered D3610. The back stamp, that was only used for a short time is from 1922. It is like many of the Royal Doulton back stamps, but it does not have the crown. There is a very old chip on the back, and crazing throughout, as would be expected with age.
This is a very desirable Royal Doulton Plate with Flow Blue decoration for your collection! Hotos as they are part of the description.