Approx.8.5 x 7.5cm, ivory, foldable, compass, ground with annual calendar and associated zodiac signs, lid inside with different cities and associated geographical data, good condition. Report with exemption of the ban on brokerage is available! Charles Bloud was one of the most important solar clock manufacturers of ivory sundials. A particularly beautiful Charles Bloud ivory folding sundial can be found in the collection of the Dresden Mathematical-Physical Salon and another one at the German Watch Museum Furtwangen. Another 4 sundials can be found in the collection of the British Museum. In the Museo Poldi Pezzoli there is a large collection of sundials, also ivory sundry from Dieppe (Seine-Maritime).