Josiah Emery Straight Lever Escapement Chronometer.
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Independent seconds movement, lateral lever escapement.
Lever escapement and thermal compensation
Early lever escapement.
Duplex double wheel escapement, monthly republican calendar.
“Montre de souscription”, with reverse caliber sold to Monsieur Manu on 1 May 1810 for 600 Francs
Quarter-repeating watch, enamelled case decorated with diamonds and pearls, formerly belonging to Queen Catherine of Württemberg, wife of Jérôme Bonaparte.
Revolutionary and Gregorian calendar, "virgule" escapement.
Weekly winding device, monthly calendar, with comma escapement
Built on the principle of “garde temps”, quarter and half quarter hour repeater with double wheel duplex escapement sold to Monsieur Egerston (Egerton) on 17 December 1813 for 3,000 FF .
Dead seconds chronometer with in-line straight lever escapement.
Cylinder escapement watch formerly belonging to Louis Bonaparte (1778–1846), brother of Napoleon, King of Holland, and passed down within the Imperial dynasty.
Seven-day power reserve, cylinder escapement.
“Rèpètition des quart a toc” with ruby cylinder escapement, “jumping hour” device sold to monsieur Frederic Frackmann (Breguet’s correspondent in Moscow) on 15 Germinal anno 12 (5 May 1804) for the price of 1500 FF.
Reverse hour-quarter repeater (pull)
Automatic winding with beating mass, perpetual monthly and weekly retrograde calendar, cylinder escapement.