Detent Lever escapement invented by Robert Robin. Restored by Breguet.
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Chronometer fitted with a pivoted detent escapement and a balance with three-roller suspension.
Finished by son Pierre Le Roy, Sully escapement, calendar.
Movement with experimental verge-lever escapement.
Quarter andhour repeater, jumping hours device with experimental ruby verge escapement.
“Montre de souscription” with double wheel duplex escapement
Anonymous watch with central and auxiliary dead seconds, chicane lever escapement
Montre a repetition des quart a toc, ruby cylinder escapement sold to Monsieur Recordon de Londres on 27 Fructidor an 10 (14 September 1802) for 1,500 FF.
“Resilient lever” lever escapement modified by Mortimer George Cole.
Chronometer with Robin 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 .
Thirty-tooth “rack lever” escapement
“Rèpètition à minutes” chronometer with double-wheel duplex escapement, sold to the Spanish Princes in Valençay on 29 May 1809 for the price of 2,400 F.
Chronometer with Earnshaw spring detent escapement, spherical balance spring.
Alarm with verge escapement
Quarter hour repeater and calendar with Debaufre escapement modified by Pierre Le Roy