Jatco,
Thanks for your comments. I've worn this watch daily from day one. I had the watch serviced about 5 years ago (not an authorised facility). I went to bed one night, and the woke up to a non-running watch. I tried to wind and nothing.
As far as impact damage, I may have dropped it on my carpeting but never have I dropped it on a hard surface. Furthermore, I never noticed signs of any water intrusion. I guess 33 years of daily use, things will wear out. Just would like to know if the estimate seems fair.
Thanks.