I stumbled upon something that quite possibly was posted before, but back in 2005. The archives did not come up with the title of this short movie, so I am posting it as I found it a joy to watch.
This is a PR piece done for the re-launch of the Pilots Watches including the spitfire. Interviewed were a young(er) Georges Kern and Guy Bove. There is a good deal of time spent showing case making and assembly.
When the site loads go to Brands A-L tab and select IWC. There are several movies to view. The one with Herr Kern is the third movie. The other movies are quite entertaining as well. Enjoy
I apologize if this is something posted before.
Bill