WATCH KEY HAVING BELONGED TO EMPEROR NAPOLEON I In chased and gilded metal, set with a diamond-cut white stone. Length: 5 cm A.B.E. Origin and history : - Valérie Masuyer, lady-in-waiting to Queen Hortense. - Former Napoleonic collection of the Prince's Palace of Monaco (2nd sale, lot 72) with an entry in the archives of the Napoleonic Museum in Monaco, signed by Valérie Masuyer: "Key to a watch that was lost but used by the Emperor on St Helena, given by Mr Marchand during my visit to Strasbourg in October 1837, after the death of the Queen. Valérie Masuyer". (not supplied and not reproduced) A chiseled and gilt metal watch key, decorated with a white stone, which belonged to the Emperor Napoleon I