Independent seconds movement, lateral lever escapement.
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Duplex double wheel escapement, monthly republican calendar.
Verge escapement. Interesting watch of historical value for the signature referring to the Savoy kings.
Lateral lever escapement, quarter hour repeater.
Tide indicator, enamelled dial, cylinder escapement.
Finished by son Pierre Le Roy, Sully escapement, calendar.
Experimental verge escapement
Weekly winding device, monthly calendar, with comma escapement
Verge escapement
Double comma escapement (double virgule)
“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.”
Hour and quarter repeater with cylinder escapement.
Dead seconds watch with detent escapement
"Montre simple” N.3707 sold to Monsieur Furchy Notaire on 31 June 1822 for 1140 FF.
Movement with lever detent escapement invented by Robert Robin
Decimal watch with virgule escapement, power reserve, jumping hours and barometer, center seconds n.4737 belonging to Antoine Louis Leon de Saint-Just.