Clockwise has dated this piece to the 1860s.
The bezel has the original working lock and key and the movement has been recently overhauled and in excellent condition.

In 1841 the Dent family's revered ability to make the finest domestic timepieces brought the company a Royal Warrant as the official watch and clockmaker to Her Majesty Queen Victoria and Hrh Albert Prince of Wales. The Dent family also constructed 'Big Ben'.

F. Dent, 61, Strand, and 34 and 35, Royal Exchange, Chronometer, Watch, and Clock Maker, by appointment, to the Queen and Prince Albert; sole successor to the late E. J. Dent in all his patent rights and business of the above shops, and at the clock and compass factory at Somerset-wharf; maker of chronometers, watches, astronomical, turret, and other clocks, dipleidoscopes, and patent ships' compasses, used on board her Majesty's yacht. Ladies' gold watches, 8 guineas; gentlemens' 10 guineas; strong silver lever watches, £6 6s. Church Clocks, with compensation pendulum, £85.

(Source: The Illustrated London News, Nov.3 1855)
This clock comes with my two year guarantee as standard.
Rather than trusting a courier of any sort I recommend collection or I can deliver regionally/nationally. If the brackets are removed I can also post this item tracked and insured. All antique clocks require delicate handling and specific setting up so it is far better for a dealer to meet a client and talk them through the process, or set the clock up for them, rather than leave the client struggling at the other end on their own.
Clockwise has dated this piece to the 1860s.
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