Cross Antiques has dated this piece to the 1750s.
It has a date aperture but this is now fixed and not operating. There has also been a repair to the dial, however this is behind one of the spandrels and is not visible.

The movement looks to have recently been serviced and is in good working order.
The maximum dimensions are:
205cm(81") high
50cm(20") wide
28cm(11") deep
Free local delivery and set up (60mls), national and international delivery arranged.
Cross Antiques has dated this piece to the 1750s.
Specialist in clocks
You can view the stock and full dealer information on the Cross Antiques Profile Page