Collector's Pocket Watches, Wristwatc...

Noga Hilton, Geneva, Apr 12, 2003

LOT 241

7 Breguet manuscripts- Breguet's reflections on various escapements for astronomical regulators.- Notes concerning a movement, no. 3988, made and finished by M. Clavey- Calculations of wheel trains and projects for calibers- Breguet's reflections on the memoir presented by Perrelet to the Académie des Sciences, concerning an astronomical clock with two dials indicating sidereal time, mean and solar time.- The draft of a letter concerning an order of tools similar to those made for his pupil Kessels.7 pages, recto-verso