Experimental verge escapement
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“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.
Quarter hour repeater with double wheel duplex escapement.
Quarter hour repeater cylinder escapement
Compteur a pointage, nouveau modele chronographe a encre, sold at the College de France for 350 FF
Quarter-repeating watch with an experimental duplex-cylinder escapement, presented to Dupont de l’Eure in 1818, magistrate and politician.
Cylinder escapement, quarter hour repeater.
Side lever experimental escapement
Cylinder escapement by a pupil of Robin
“Répétition à ponts, medium size, 19 lignes, pierced arbor, gold case no. 4068, half-quarter repeating, lever escapement,” sold on 16 March 1826 to Monsieur Spies. Monthly calendar and a secret compartment containing the portrait of a young woman.
“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.
“Rèpètition de Première Classe” con scappamento a cilindro in rubino, e jumping hour venduto a monsieur Ternaux (Étienne Nicolas Louis Ternaux ) , il 2 Brumaio anno 13 (24 ottobre 1804) per 1.800 FF.
Reverse hour-quarter repeater (pull)
Side lever escapement.
Hour and quarter touch repeater with Debaufre escapement modified by Pierre Le Roy, enamelled case.
Virgule escapement