Production of steel balls for pivot bearings.

Creation of the Leroy 01 watch, the most complicated watch at the time (975 parts), now kept at the Time Museum in Besançon.

Functions: hours, minutes, seconds, time in 125 cities in the world, day of the week, month, year, moon phases, seasons, solstices and equinoxes, state of the sky in the 2 hemispheres, time of sunrise and sunset, great chime, chronograph. In addition, five non-watch-related functions: hygrometer, thermometer, barometer, altimeter and compass.

Grand Prix at the International Exhibition of Saint-Louis.

Winner of the Besançon Chronometric Cup.