Masons Antiques has dated this piece to the 1860s.

The 12" dial has black Roman numerals and is signed M. PRESTON - LANCASTER
The 8 day, chain-driven fusee movement has just been fully serviced by our BHI registered staff.
The brass pendulum can be seen swinging through a glass window to the lower half of the case when the clock is working.
It has a heavy, cast brass bezel.
There are inspection panels to both sides of the backbox and a hinged lower door to facilitate easy fitment of the pendulum.
Masons Antiques has dated this piece to the 1860s.
You can view the stock and full dealer information on the Masons Antiques Profile Page