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Quarter hour repeater, grand sonnerie clock watch, Robin detent lever escapement
“In homage to A.L. Breguet”, chronometer with thermometer, weekly calendar and power reserve.
“Medaillon a tact” n.3227 sold to Jérôme Bonaparte, brother of Napoleon, King of Westphalia.
Souscription watch
Quarter hour repeater with double wheel duplex escapement.
Finished by son Pierre Le Roy, Sully escapement, calendar.
Self-winding hour and quarter repeater with pedometric oscillating mass, cylinder escapement.
Dead seconds watch with detent escapement
Compteur a pointage, nouveau modele chronographe a encre, sold at the College de France for 350 FF
Calendar movement with dead seconds and special cylinder escapement.
Sully's escapement
Montre simple medaillon eccentrique 13 lignes ½, cylinder escapement in ruby sold to Lionel Rothschild (banker) on 31 May 1831 for 1,400 FF.
Monthly and weekly calendar, with virgule escapement and “diablotine”
Robin's lever detent escapement of special shape
Chronometer with Robin escapement
