Vintage Hornsea Muramic Lancaster Vitramic pin dish

Another, smaller, Hornsea Lancaster Vitramic pin dish in lovely condition. 8.5cm diameter, 2 cm high. In lovely condition. Designed by John Clappison in the 1970's. 

It has a chocolate brown smooth glaze, with an area of shiny glaze in white and shades of brown, resembling concentric circles of ink or paint dropped into water.