Movement with lever detent escapement invented by Robert Robin
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Finished by son Pierre Le Roy, Sully escapement, calendar.
Monthly and weekly calendar, with virgule escapement and “diablotine”
Quarter hour repeater clock watch, verge escapement.
Small-sized watch built on the principle of chronometers with monthly calendar, lever escapement sold to Baron Schickler on 30 December 1828 for the price of 3,600 FF.
Cylinder escapement
Hour and quarter repeater with cylinder escapement.
Compteur a pointage, nouveau modele chronographe a encre, sold at the College de France for 350 FF
“Simple gold watch with grandes secondes d’un coup” sold on 1 March 1860 to Monsieur Mathias for 655 francs, returned by the same on 8 March 1866, resold to Monsieur Henry Mallet for 875 francs to be presented to Doctor Lienard, double barrel, independent seconds, lever escapement.
Chronometer fitted with a pivoted detent escapement and a balance with three-roller suspension.
Garde temps, rèpètition de première Classe sur les princes des chronomètre” sold to Count Mercy d’Argenteau on 28 January 1824 for 3,400 FF. Repetition of hours, quarters and half quarters, monthly calendar. Jumping hour.
“Double-face” watch, monthly calendar, verge escapement, twelve- and twenty-four-hour indication.
Montre de carrosse a repetition des quart et function de reveil sold to the count de Mercy Argentau on 09 June 1837 at the price of 620 FF, ancienne 1155 sold to Pierre de Salabert for the Marquise of Santa Cruz on 18 Floreal year 13 (08 May 1805) , at the price of 1,440 francs.
Quarter hour repeater with double wheel duplex escapement.
“Montre de souscription” apocryphal. Watch published in George Rigot's book: “Montres de souscription et a tact de Breguet“ ed.2017
Small sized watch, cylinder escapement, enamelled case