1. Breguet Grande Complication, Marie Antoinette – $30 Million
Before Abraham-Louis Breguet founded his watch-making business in 1775 he had made a number of connections with high society thanks to his apprenticeship and time as a math scholar. The highest of these social connections was surely the French Royal Family and, most notably, Marie Antoinette. The Queen was reportedly fascinated with Breguet watches and, depending on who you believe, it was either her or her lover, Count Hans Axel von Fersen, who commissioned Breguet to make a watch which contained all known functions at that time. Breguet began work on the project in 1782/83 and it was completed by his son in 1827. By this time, Marie Antoinette, Count von Fersen and Breguet were all dead. Watch-makers from Breguet were commissioned to make a copy of the Marie-Antoinette in 2005. Instead of the original 45 years, this one only took three.