Clock movements dating
They sound a sequence of notes at each quarter hour.The longest sequence is at the hour, followed by the the hour being struck often on a deeper gong or chord of gongs.Smiths themselves called them "hour and half hour strike" They have two winding arbors (and so have two winding apertures or keyholes in the dial if the clock is wound from the front).CHIMING clocks have three winding apertures (keyholes) .This is similar to "Big Ben" and indeed the most common chime is the Westminster chime made famous by Big Ben.Speaking of e Bay, if selling, do please include a picture of the back as well as the front of your clock.until circa 1949 when the Enfield production was moved to Wales...
It was introduced as a "Transistorised Battery Movement" .
Whilst 'fingers' or 'pointers' may be understood, it is more usual to talk of the 'hands' of a clock.
Smiths clocks which strike once at the half hour and strike x times at the hour to show it is x o'clock are STRIKING clocks, NOT chiming clocks.
I also have a technical information leaflet issued after the 1977 change of company name which shows a very similar unit (though with minor differences) and which is headed "Jewelled Electronic Battery Movement". If it has a "tuning Fork" movement then it dates from 1971 or later.
Visually it would look like the Mark IV apart from the company name. IF you have read this far it is just possible that you are one of the very few who like to "do things right"and you may, therefore, like to get the terminology right.
The Smiths group plc claim an ancestry dating back to 1851 when a Samuel Smith had a shop in Newington Causeway, London.