Yes the case is marked so
Patent Lever, Fully Jewelled, T.F.Cooper, London.
On the case it is a definate " T " on the Dial it is a definate " J " and on the movement it could be either.
Case is 2 3/8 dia and 3 1/4 high at the bow. No hallmarks of any kind. A tiny "SST" ( sterling ?? ) marking inside the back cover. Plated brass dust cover.
I am starting to get the feeling that this is worth saving as is if I can find the necessary parts.
Learning all the time.
Proud Member of Global Horology and Chapter 149