“Compteur militaire” cylinder escapement 84 divisions
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"Souscription" with auxiliary minutes and seconds
"Montre simple” N.3707 sold to Monsieur Furchy Notaire on 31 June 1822 for 1140 FF.
Chronometer made by Joseph Thaddeus Winnerl on a movement by Robert Robin
Hour and quarter repeater, cylinder escapement, enamel case
Detent Lever escapement invented by Robert Robin. Restored by Breguet.
Robin style movement with cylinder escapement.
Independent seconds movement, lateral lever escapement.
Finished by son Pierre Le Roy, Sully escapement, calendar.
Hour and quarter repeater, mustache lever escapement
Montre a répétition de quart, a grand second d’un coup, sur le principes de chronomètre.
Experimental verge escapement
Central seconds, regulateur dial, cylinder escapement
Chronometer with Earnshaw spring detent escapement, spherical balance spring.
Hour and quarter repeater with double wheel duplex escapement, snap calendar, engraved equation of time
Extra-flat watch with regulator dial, lever escapement, Rèaumur thermometer.