Montre a répétition de quart, a grand second d’un coup, sur le principes de chronomètre.
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Quarter hour repeater clock watch, verge escapement.
Anonymous watch with central and auxiliary dead seconds, chicane lever escapement
Scappamento ad ancora detent di Robin
Calendar movement with dead seconds and special cylinder escapement.
Detent Lever escapement invented by Robert Robin. Restored by Breguet.
Quarter and half quarter hour repeater with ruby cylinder escapement no. 255.
Republican and Gregorian calendar, lever escapement by J.M. Pouizait, skeletonized movement.
Skelectric watch with Masonic decoration.
Twin barrel chronometer, monthly calendar with ruby lateral lever escapement
Robin's lever detent escapement of special shape
“Montre de souscription” with double wheel duplex escapement. Watch published in George Rigot's book: “Montres de souscription et a tact de Breguet“ ed.2017
Finished by son Pierre Le Roy, Sully escapement, calendar.
Elève de Winnerl, chronometer with lever escapement.
“Rèpètition de Première Classe” with ruby cylinder escapement, sold to an anonymous “monsieur” on 13 July 1811 for 1,728 FF, resold to Monsieur Gozzel on 22 May 1822 for 900 FF.
Quarter hour repeater with double wheel duplex escapement.