Independent seconds movement, lateral lever escapement.
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Chronometer with lever escapement.
“Resilient lever” lever escapement modified by Mortimer George Cole.
Movement with particular Pouzait lever escapement, quarter hour repeater
“Montre de souscription” apocryphal. Watch published in George Rigot's book: “Montres de souscription et a tact de Breguet“ ed.2017
Double comma escapement (double virgule)
Calendar movement with dead seconds and special cylinder escapement.
Dead central seconds watch with star duplex escapement invented by Charles Edouard Jacot with 1/4 second diablotine
"Montre simple plate excentrique nouveau calibre 16½ lignes échapt cilindre, cadran émail” sold to Monsieur Benardaky on 01 luglio 1850 at prize of 1200 FF.
Decimal watch with calendar and special escapement
Finished by son Pierre Le Roy, Sully escapement, calendar.
"Rèpètition de première Classe sur les Principes des Chronomètres", calendar, ruby lever escapement, hour, quarter and half-quarter repeater, sold to M. le Professeur Shumacher, on 23 February 1829 for 3,200 FF.
Decimal watch with double time indication on a 24-hour basis, verge escapement.
“Rèpètition à minutes” chronometer with double-wheel duplex escapement, sold to the Spanish Princes in Valençay on 29 May 1809 for the price of 2,400 F.
Quarter hour repeater with lateral lever escapement
Dead seconds watch with duplex lever escapement by Jean Renaud