“Montre de souscription”.
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"Souscription" with auxiliary minutes and seconds
Garde temps, rèpètition de première Classe sur les princes des chronomètre” sold to Count Mercy d’Argenteau on 28 January 1824 for 3,400 FF. Repetition of hours, quarters and half quarters, monthly calendar. Jumping hour.
“Repetition à ponts” con scappamento a cilindro in rubino, venduto al generale Nicholas Joseph Maison, il 30 settembre 1807 per 1.696 FF .
Ruby lever escapement.
Detent Lever escapement invented by Robert Robin. Restored by Breguet.
Quarter and half quarter hour repeater with ruby cylinder escapement no. 255.
Navigation chronometer with sidereal time indication.
Montre de carrosse a repetition des quart et function de reveil sold to the count de Mercy Argentau on 09 June 1837 at the price of 620 FF, ancienne 1155 sold to Pierre de Salabert for the Marquise of Santa Cruz on 18 Floreal year 13 (08 May 1805) , at the price of 1,440 francs.
“Montre de souscription” with double wheel duplex escapement. Watch published in George Rigot's book: “Montres de souscription et a tact de Breguet“ ed.2017
Scappamento ad ancora detent di Robin
Lever escapement and thermal compensation
Dead seconds watch with duplex lever escapement by Jean Renaud
Hour and quarter repeater, cylinder escapement, enamel case
Double comma escapement (double virgule)
Dual scale thermometer on the Houriet principle