This book is the most complete and detailed edition on these watches. With 320 pages of completely unpublished contents, the authors begin their journey in the year 1988 with the reference 16520. For this model alone you will find 12 different dials, which are illustrated and described in every little detail. Technical features and examination of all watch parts (movements, dials, bezels, subdials, case backs, hands, indexes, pushers, winding crowns, bracelets and a lot more).