“Resilient lever” lever escapement modified by Mortimer George Cole.
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Finished by son Pierre Le Roy, Sully escapement, calendar.
Made on the Houriet principle with a special dial
Decimal watch with double time indication on a 24-hour basis, verge escapement.
Elève de Winnerl, chronometer with lever escapement.
Extra-flat watch with regulator dial, lever escapement, Rèaumur thermometer.
Montre a répétition de quart, a grand second d’un coup, sur le principes de chronomètre.
Movement with lever detent escapement invented by Robert Robin
Sully's escapement
Repetittion a cuvette ruage 4269 en or 742 Gros, vendu au General Moreau le 2 octobre 1810 au prix de 1800 FF
Quarter hour repeater, grand sonnerie clock watch, Robin detent lever escapement
Dead seconds watch with detent escapement
Monthly and week calendar, with central seconds, verge escapement.
Scappamento ad ancora detent di Robin
First generation early straight line lever 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.”