Swiss Watch Fair 1966 BF 1
One of the most important new Swiss technical developments presented at the Swiss Watch Fair this year the ultra flat self-winding “Golden Shadow” watch. The automatic oscillator runs entirely on ball bearings, but its total thickness is only 2.5 mm. It has a 48-hour power reserve. The complete watch is only 4 mm thick, which makes it the world T s thinnest automatic with ball bearing movement and fully shock-protected. (UNIVERSAL “Golden Shadow”)