Seven-day power reserve, cylinder escapement.
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Extra-flat watch with regulator dial, lever escapement, Rèaumur thermometer.
Orologio a secondi morti con scappamento a virgola
Lever escapement and thermal compensation
Movement with experimental lateral lever escapement in the Robin style.
Hour and quarter repeater, verge escapement, enamelled case.
“Montre de souscription”.
Dead central seconds watch with star duplex escapement invented by Charles Edouard Jacot with 1/4 second diablotine
Navigation chronometer with sidereal time indication.
Experimental verge escapement
Skelectric watch with Masonic decoration.
Quarter hour repeater and calendar with Debaufre escapement modified by Pierre Le Roy
Hour and quarter repeater, cylinder escapement, enamel case
Chronometer with Robin escapement
Compteur a pointage, nouveau modele chronographe a encre, sold at the College de France for 350 FF
Small sized watch, cylinder escapement, enamelled case