Wound for Life has a terrific article about German watchmaking guys. It is actually part 1 of a continuing series,
and the first has to do with the German cities of Pforzheim, and Glashutte. The article covers a time period leading
up to, and around WWII. With brands like Laco, Sowa, Wempe, and A. Lange & Sohne being talked about. As well
as inventions like Alfred Helwig's Flying tourbillon, and Richard Langes new metal for balance springs which we know
as Nivarox today.
Here is that article...http://www.woundforlife.com/2015/05/25/german-watchmaking-history-part-i/
Some pictures also for you...