Exceptional Horological Works of Art

Geneva, Oct 19, 2002

LOT 17

Lot comprising: Important illustrated correspondence between L. Cottier and Hans Wilsdorf, founder of Rolex, concerning World Time projects among other things; illustrated project by L. Cottier for Rolex concerning means of adjus- ting waterproof watches without opening them among other things; project by L. Cottier for Rolex concerning improvement of Date- Just system.