Unreliable, works then stops, ticking slower than it should, balance & wheel are good. It will need at least a service. Dial plate is 42.8mm in diameter, rear base plate 37.4mm. Nice dial,...

5.5cms square x 1.8cms high. The corners of the box base have pulled away. 

 

Verge movement with contrite wheel. Will need a repair, chain is broken. The movement is unsigned but fairly confident its English.  Original dial in excellent condition,...