This is a wonderful Royal Doulton small bowl that measures 6 inches in diameter. It has a streaky blue glaze with flower decoration. The trademark on the bottom is for Royal Doulton England with the lion on top. It has the numbers "8510" and "661" underneath and the incised initials of "JB," which I think must be the initials of the artist. The bowl is in very nice conditions with a few scratches in the glaze. T is a line visible on the bottom, but it doesn't appear to be a crack.
I would be happy to answer any questions you might have.