Josiah Emery Straight Lever Escapement Chronometer.
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Lever escapement and thermal compensation
Hour and quarter repeater, mustache lever escapement
Chronometer with quarter hour repeater and calendar, pivoted detent escapement with experimental thermal compensation
Verge escapement
Quarter repeater in gold and platinum hunting case, sold to Count François Potocki on 15 March 1822, price 2400 FF. Repurchased in 1828 and resold to Madame Dupaty in 1829
Repetittion a cuvette ruage 4269 en or 742 Gros, vendu au General Moreau le 2 octobre 1810 au prix de 1800 FF
Chronometer with patented detent escapement.
Souscription watch
Quarter hour repeater and calendar with Debaufre escapement modified by Pierre Le Roy
Garde temps, rèpètition de première Classe sur les princes des chronomètre” sold to Count Mercy d’Argenteau on 28 January 1824 for 3,400 FF. Repetition of hours, quarters and half quarters, monthly calendar. Jumping hour.
Small-sized watch built on the principle of chronometers with monthly calendar, lever escapement sold to Baron Schickler on 30 December 1828 for the price of 3,600 FF.
Month-day calendar with Poizait lever escapement large central seconds mounted in mahogany case
Escapement “pallet pin weel”
Hour and quarter repeater with cylinder escapement.
Cylinder escapement watch formerly belonging to Louis Bonaparte (1778–1846), brother of Napoleon, King of Holland, and passed down within the Imperial dynasty.