Experimental verge escapement
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Hour and quarter repeater with double wheel duplex escapement, snap calendar, engraved equation of time
Chronometer with lever escapement.
Quarter hour repeater with lateral lever escapement
First generation French lever escapement movement
“Montre de souscription”, with reverse caliber sold to Monsieur Manu on 1 May 1810 for 600 Francs
George Graham lever escapement, double-dial astronomical watch, equation of time. Double face watch.
“Medaillon a tact” n.3227 sold to Jérôme Bonaparte, brother of Napoleon, King of Westphalia.
Dead independent seconds movement, cylinder escapement.
Duplex double wheel escapement, monthly republican calendar.
Tide indicator, enamelled dial, cylinder escapement.
Verge escapement
“Subscription" watch, Cassa di Joly no. 1769, sold to Prince Kurakin on August 9, 1811, for 1,080 FF, returned in 1812 and resold to the Princes of Valencay on May 8, 1812, for 980 FF.”
Extra-flat watch with regulator dial, lever escapement, Rèaumur thermometer.
Movement with lever detent escapement invented by Robert Robin
Scappamento ad ancora e compensazione termica