Montre a répétition de quart, a grand second d’un coup, sur le principes de chronomètre.
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Lever escapement and thermal compensation
"Montre simple plate excentrique nouveau calibre 16½ lignes échapt cilindre, cadran émail” sold to Monsieur Benardaky on 01 luglio 1850 at prize of 1200 FF.
"Repetition demi quart sur timbres” with lever escapement on the “garde temps” principle, hunter case with secret “portrait” compartment, “jumping hours” device sold to Count Panin on 11 June 1821, for FF 4,800, reentered, restored and resold with number 4931 to Monsieur Lacroix of Turin on 16 May 1831 for 4800 francs.
Chronometer made by Joseph Thaddeus Winnerl on a movement by Robert Robin
Duplex double wheel escapement, monthly republican calendar.
“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.
Alarm with verge escapement
Thirty-tooth “rack lever” escapement
Quarter hour repeater by touch with special cylinder escapement.
Movement with lever detent escapement invented by Robert Robin
“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.
Straight lever escapement (attributable to Marguerite Dupont who was a watchmaker in Alençon in 1795)
Seven-day power reserve, cylinder escapement.
Double comma escapement (double virgule)
Finished by son Pierre Le Roy, Sully escapement, calendar.