Found new owner
Even if Dunhill didn't obtain a patent for usage of brindle ebonite for stems, their input in promoting of a new material and invention of a suitable and well memorable name for it is undoubted. The name was born in 1979, when a new series of sandblasted pipes with modern stems was christened in honor of Cumberland Street - the street where production and warehouse capacities of the company existed comfortably for many years. Today we are glad to offer the 1981 Dunhill Cumberland pipe - cozy, elegant and practical.
The pipe markings are "DUNHILL CUMBERLAND \ MADE IN ENGLAND 21", "31351". The length is 14.1 cm (5.55"), bowl's height is 4.2 cm (1.65"). External diameter of the bowl is 3.7 cm (1.46"), internal diameter is 1.9 cm (0.75"). The depth is 3.7 cm (1.46") and this pipe weights 29 gr. Briar, cumberland stem (slightly patched in the button area - you may identify it under a good light), no filter.