Movement with particular Pouzait lever escapement, quarter hour repeater
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“Montre de souscription”, sold to Adjutant Gènèral Ricard on 15 December 1813 for 600 F.F. Watch published in George Rigot's book: “Montres de souscription et a tact de Breguet“ ed.2017
Quarter hour repeater, grand sonnerie clock watch, Robin detent lever escapement
Revolutionary and Gregorian calendar, "virgule" escapement.
Navigation chronometer with sidereal time indication.
Movement with lever detent escapement invented by Robert Robin
“Subscription" watch, Cassa di Joly no. 1769, sold to Prince Kurakin on August 9, 1811, for 1,080 FF, returned in 1812 and resold to the Princes of Valencay on May 8, 1812, for 980 FF.”
Dual scale thermometer on the Houriet principle
Anonymous watch with central and auxiliary dead seconds, chicane lever escapement
Side lever experimental escapement
« Simple garde-temps, arbre percé 20 lignes échappement ancre” sold to Monsieur de Bignon 11 March 1858.
Quarter andhour repeater, jumping hours device with experimental ruby verge escapement.
Quarter hour repeater with lateral lever escapement
Orologio a secondi morti con scappamento a virgola
Finished by son Pierre Le Roy, Sully escapement, calendar.
Escapement “pallet pin weel”