What time is it? Watches and horology

none of them have been serviced, they have a "tuning fork" movement, which will probably cost more than the watch to get serviced.
ask aroogah, he has one, which he had trouble getting serviced.

He'll be along to advise you better.

interesting - thank you murtle, I look forward to hearing from aroogah - I already have an ancient trench watch that I suspect may have the same mechanism/problem and don't need another non-functioning watch

It is just the F300s that have the tuning fork movement. You'll be Ok with the "Officer" with regards to repairs. I haven't had problems getting my F300 serviced or repaired and you should think of one for your collection. There is nothing like the sound or the sweep.

Of course once you have gone F300, you'll need a Megaquartz, then a Bumper, an auto, a manual.. ..