There is a Pre-Kern-time at IWC !
By: Walter2 : September 7th, 2018-01:30
IWC was an important part to create Lange&Söhne. IWC had the first wristwatch with Grand Complication, and this watch worked well. Not like the 1735 from White Bread, which comes later and never runs. IWC made the first well working calender perpetual, th...