Quarter hour repeater and calendar with Debaufre escapement modified by Pierre Le Roy
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George Graham lever escapement, double-dial astronomical watch, equation of time. Double face watch.
First generation early straight line lever escapement
‘Montre a repetition des quart a toc’ lever escapement, monthly calendar, sold on 09 August 1792 to Monsieur Robert (Anglais) for 1800 francs “Nouveau calibre”.
Chronometer with patented detent escapement.
Sold to Son Excellence M. Achille Fould on 12 November 1860 for 950 FF. Presented to Professor Heinrich Siegel
“Montre de souscription” with calendar and virgule escapementa
Decimal watch with virgule escapement, power reserve, jumping hours and barometer, center seconds n.4737 belonging to Antoine Louis Leon de Saint-Just.
“Simple gold watch with grandes secondes d’un coup” sold on 1 March 1860 to Monsieur Mathias for 655 francs, returned by the same on 8 March 1866, resold to Monsieur Henry Mallet for 875 francs to be presented to Doctor Lienard, double barrel, independent seconds, lever escapement.
Duplex double wheel escapement, monthly republican calendar.
Quarter hour repeater clock watch, verge escapement.
Central seconds, regulateur dial, cylinder escapement
Dead seconds chronometer with in-line straight lever escapement.
Decimal watch with double time indication on a 24-hour basis, verge escapement.
“Montre de souscription”.
Watch for the Turkish market, quarter-hour repeater with ruby cylinder escapement, shipped to the Maison de Russie on 23 April 1810 and sold by Moreau on 31 December 1810 for FF 1,680.