Central seconds, regulateur dial, cylinder escapement
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Revolutionary with Robin type 2 dial, republican calendar, verge escapement
Quarter and half quarter hour repeater with ruby cylinder escapement no. 255.
Detent anchor escapement by Robert Robin, quarter hour repeater.
Quarter hour repeater with double wheel duplex escapement.
Extra-flat watch with regulator dial, lever escapement, Rèaumur thermometer.
Montre a répétition de quart, a grand second d’un coup, sur le principes de chronomètre.
“Montre de souscription” case n.307 « Remise a son excellence l'Ambassadeur de Espagne pou faire passer a Monsieur X » 5 Terminador an 9 (24 Jullet 1801)
Finished by son Pierre Le Roy, Sully escapement, calendar.
Chronometer with lever escapement.
Quarter andhour repeater, jumping hours device with experimental ruby verge escapement.
Dual scale thermometer on the Houriet principle
Decimal watch with virgule escapement, power reserve, jumping hours and barometer, center seconds n.4737 belonging to Antoine Louis Leon de Saint-Just.
Monthly and week calendar, with central seconds, verge escapement.
“Double face”, hour and quarter repeater, monthly calendar, centre seconds, early cylinder escapement.
“Montre de souscription”.