This is a Mannock Anti Grip Cue. It is a double-butted cue, with a machine spliced ebony butt on top of a hand spliced tulip wood butt. The front-splice is thuya burr. The badge is mother-of-pearl.
This particular Mannock has an ash shaft, which makes it a little unusual. Mannocks were usually made with steamed pearwood shafts. This cue probably dates from the 1930s.
The earliest Mannocks were made by John Patrick "Jack" Mannock, to a design he patented in 1891.
Burroughes & Watts took over manufacture of the Mannock from sometime around 1905, when Burroughes & Watts purchased the patent from J.P. Mannock.
Burroughes & Watts continued to manufacture Mannocks from 1905 through to the late 1960s. The Mannock Anti Grip Cue was the most expensive cue in their range.
To view J.P. Mannock's 1891 patent, click on the link below.