Had a new strap fitted some 40 years ago, after a few weeks the watch fell out and left the strap and ring still on my wrist, it has been in the drawer ever since, I occasionally give it a shake to get it going, it runs smoothly, I have checked tbe thread on the watch, it seems ok, so I reckon the ring must have been damaged when the stap was fitted, have you any idea where I might obtain a ring with a good thread, thanks, Trevor.
Just a guess. How about WATCHCO. They've been a topic recently on this MB. Seems to me there may be a question as to whether they're still in business? Someone who knows the situation might answer.
I think you could find a new ring from Ebay or maybe cousinsuk. But i am sure that it's just come loose. Go to a watchmaker and ask if he could help out. I just needs to be tighten properly with the right tool.