WWII 1936 Junghans Luftwaffe German Desk Clock 

The pieces they made during WW-II are highly collectable, but all of their clocks in general are high-quality collectables. It appears to be a 24-hour winder. (Although it is difficult to see in the photographs, all the pieces of the clock have been inconspicuously etched with the specific clock number: F 45947. ).