I have two of these clocks, both dated 1943 the case is made from Bakerlite the ones I have are slightley different and have the issue date and a broad arrow on the dial and have a smiths 123 movement with the platform on top of the movement.
They are a straight forward movement to service the only thing to watch on these Smiths platform escapements is that the regulating arm sometimes doesn't move the regulator index or will only move it one way this cause the platform to run at excessive speed gaining minutes a day. You can move the regulator arm and make no diffrence to time keeping so when you service it make sure when you move the arm the index actually moves.
The cases where made from bakerlite because a war time shortage of oak made it too valuable a commodity to waste on a clock, do not use any type of abrasive cleaner or solvent based cleaner on the case just use a good quality wax polish the finnish on bakerlite is only skin deep.
These where issued where ever they where needed so could have been in a office, op's room canteen any where some times there is a stores number painted on the back of the clocks this can make it possible to work out which R.A.F base it was issued to.
These are often described as rare which is stretching it quite a bit they where made in quite large numbers by smiths and prices on the web and Ebay seem to go from sensible to cloud cuckoo, I paid 100 pounds for one and 70 for the other quite recently. at auction houses they seem to go for a max of 300 pounds but quite often much lower
Another thing to watch is the bezels are spun brass and quite flimsy at the hinge I replaced the glass on the one I have on the wall in my living room with perspex which is much lighter and kinder to the hinge than the original glass fitted ( retain the original glass if you do this).
As far as restoration goes your clock doesn't really need any the dial is good with only minor paint loss where the dial screws go on the edge, the dials quite often suffer from rust and discolouring, do as little as possible and leave as original as possible is the only advice to give.