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Calendar movement with dead seconds and special cylinder escapement.
Experimental verge escapement
Chronometer with quarter hour repeater and calendar, pivoted detent escapement with experimental thermal compensation
Quarter hour repeater with double wheel duplex escapement.
‘Montre a repetition des quart a toc’ lever escapement, monthly calendar, sold on 09 August 1792 to Monsieur Robert (Anglais) for 1800 francs “Nouveau calibre”.
Scappamento ad ancora detent di Robin
“Rèpètition de Première Classe” con scappamento a cilindro in rubino, e jumping hour venduto a monsieur Ternaux (Étienne Nicolas Louis Ternaux ) , il 2 Brumaio anno 13 (24 ottobre 1804) per 1.800 FF.
Repetition garde temps jumping hour, sold to M. Malotaky, second interpreter of the Turkish Ambassador, Prairial year 6 (May-June 1798), for 1,200 FF.
Navigation chronometer with sidereal time indication.
"Montre simple” N.3707 sold to Monsieur Furchy Notaire on 31 June 1822 for 1140 FF.
Quarter hour repeater and calendar with Debaufre escapement modified by Pierre Le Roy
Dual scale thermometer on the Houriet principle
Hour and quarter repeater, mustache lever escapement
“Double face”, hour and quarter repeater, monthly calendar, centre seconds, early cylinder escapement.
First generation early straight line lever escapement