Calendar movement with dead seconds and special cylinder escapement.
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Sold to Son Excellence M. Achille Fould on 12 November 1860 for 950 FF. Presented to Professor Heinrich Siegel
Dead central seconds watch with star duplex escapement invented by Charles Edouard Jacot with 1/4 second diablotine
Movement with experimental lateral lever escapement in the Robin style.
“Montre simple” in the style of Breguet.
“Medaillon a tact” n.3227 sold to Jérôme Bonaparte, brother of Napoleon, King of Westphalia.
Skelectric watch with Masonic decoration.
Finished by son Pierre Le Roy, Sully escapement, calendar.
“Repètition dix minutes aux deux styles à volontè a heur sautants” with ruby cylinder escapement and parachute, sent “au freres Chaudoir”, 29 Pluviose an 10 (18 February 1802), revised at the request of Monsieur Mazeau in 1828.
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 .
“Montre de souscription” case n.307 « Remise a son excellence l'Ambassadeur de Espagne pou faire passer a Monsieur X » 5 Terminador an 9 (24 Jullet 1801)
Watch presented by Napoleon Bonaparte to Jean Joseph Gauthier on 21 Floréal Year VII (May 10, 1799), verge escapement
“Double face”, hour and quarter repeater, monthly calendar, centre seconds, early cylinder escapement.
Self-winding hour and quarter repeater with pedometric oscillating mass, cylinder escapement.
“Montre de souscription”.
“Montre de souscription” with calendar and virgule escapementa