I'm afraid it's a bit battered now, sadlyNice to see a watch thats seen some use! Whats the function of the button at 2 o'clock?
The push button is the power reserve indicator
Second hand sweeps. . .
10 seconds = low reserve (1-2 months)
20 seconds = medium reserve (2-4 months)
30 seconds = full reserve (6 months)
Or something like that !
Mine is probably ten years old and still running on the original capacitor, so could do with replacing.