N.C.B. China Cup and Saucer. Made by Dunn Bennett & Co Ltd, Burslem England. Size 3″.
These were used in the canteens at the Collieries from the late 1940s. This one is from Wales, it has the N.C.B. logo along with S.W.D. (South Western Division). There was also a larger version produced, a slightly tapered taller mug with all the same markings.