I paid $800 to have my submariner serviced last year. The first time since my wife bought it for me 25 years ago. She paid $1800 and now the same watch is $8800. I wear it every day and had it serviced once and it kept its value. tops in my book.You did a great thing with your dads with it will last at least another 50 years with acouple more services.
I’ve got a self-winding “Marathon” I was issued in Afghanistan about ten years ago. It quit working a few months ago. The face is marked “US Government” and it has a military stock number on the back of the case.
I’d like to find a local place that could fix it.