Potter unknown although the design suggests David Walters, but the piece is not empress with his name.
The impressed joining of the handle is also similar to those of known pieces.
I’ve always known it to have a wooden base the dome fits over, this is marked with turners label.
What every pottery its accredited to it’s a great useful produce.
Photos clearly show its condition with no cracks or chips. There is a slight dark mark under the glaze potency a splatter of navy when hand painted the design.