Movement with “à pattes d'ecrevisses” (crab leg) escapement
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"Repetition demi quart sur timbres” with lever escapement on the “garde temps” principle, hunter case with secret “portrait” compartment, “jumping hours” device sold to Count Panin on 11 June 1821, for FF 4,800, reentered, restored and resold with number 4931 to Monsieur Lacroix of Turin on 16 May 1831 for 4800 francs.
“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
Double-dial astronomical watch with cylinder escapement, centre seconds, and equation of time.
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.
Extra-flat watch with regulator dial, lever escapement, Rèaumur thermometer.
Quarter hour repeater and calendar with Debaufre escapement modified by Pierre Le Roy
Sold to Son Excellence M. Achille Fould on 12 November 1860 for 950 FF. Presented to Professor Heinrich Siegel
Decimal watch with double time indication on a 24-hour basis, verge escapement.
Side lever experimental escapement
Independent seconds movement, lateral lever escapement.
Hour and quarter repeater, cylinder escapement, hunting case.
Movement with lever detent escapement invented by Robert Robin
“Repetition à ponts” con scappamento a cilindro in rubino, venduto al generale Nicholas Joseph Maison, il 30 settembre 1807 per 1.696 FF .
Finished by son Pierre Le Roy, Sully escapement, calendar.