Central seconds, regulateur dial, cylinder escapement
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Quarter hour repeater cylinder escapement
Quarter-repeating watch, enamelled case decorated with diamonds and pearls, formerly belonging to Queen Catherine of Württemberg, wife of Jérôme Bonaparte.
“Montre de souscription”.
“Double face”, hour and quarter repeater, monthly calendar, centre seconds, early cylinder escapement.
Extra-flat watch with regulator dial, lever escapement, Rèaumur thermometer.
Quarter andhour repeater, jumping hours device with experimental ruby verge escapement.
Chronometer with quarter hour repeater and calendar, pivoted detent escapement with experimental thermal compensation
Finished by son Pierre Le Roy, Sully escapement, calendar.
Republican and Gregorian calendar, lever escapement by J.M. Pouizait, skeletonized movement.
Verge escapement, enamelled case decorated with diamonds and pearls
Virgule escapement
Verge escapement. Interesting watch of historical value for the signature referring to the Savoy kings.
Orologio a secondi morti con scappamento a virgola
“Montre petit medaillon simple, 13 lignes, pierced arbor, gold case with revolving back, no. 3261, moon phase, lever escapement”. Sold on 02 April 1814 to His Majesty the Emperor of Russia (Alexander I) for the sum of 2,400 francs.
Sully's escapement