Navigation chronometer with sidereal time indication.
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Republican and Gregorian calendar, lever escapement by J.M. Pouizait, skeletonized movement.
Finished by son Pierre Le Roy, Sully escapement, calendar.
Dead seconds watch with lever escapement by Pouzait
Escapement “pallet pin weel”
Experimental verge escapement
Watch presented by Napoleon Bonaparte to Jean Joseph Gauthier on 21 Floréal Year VII (May 10, 1799), verge escapement
Detent Lever escapement invented by Robert Robin. Restored by Breguet.
Hour and quarter repeater with cylinder escapement.
Quarter andhour repeater, jumping hours device with experimental ruby verge escapement.
“Montre simple” in the style of Breguet.
“Resilient lever” lever escapement modified by Mortimer George Cole.
“Repetition à ponts” con scappamento a cilindro in rubino, venduto al generale Nicholas Joseph Maison, il 30 settembre 1807 per 1.696 FF .
"Montre a repetition des quart a toc" Robin-style anchor escapement, sold on 28 June 1793 to Monsieur Fabre Loncle.
« Simple garde-temps, arbre percé 20 lignes échappement ancre” sold to Monsieur de Bignon 11 March 1858.
Quarter hour repeater cylinder escapement