Chronometer with Robin escapement
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Straight lever escapement (attributable to Marguerite Dupont who was a watchmaker in Alençon in 1795)
“Compteur militaire” cylinder escapement 84 divisions
"Montre simple” N.3707 sold to Monsieur Furchy Notaire on 31 June 1822 for 1140 FF.
Hour and quarter repeater and alarm with cylinder escapement.
Decimal watch with double time indication on a 24-hour basis, verge escapement.
Chronometer fitted with a pivoted detent escapement and a balance with three-roller suspension.
Hour and quarter repeater, cylinder escapement, enamel case
Tide indicator, enamelled dial, cylinder escapement.
Quarter hour repeater and calendar with Debaufre escapement modified by Pierre Le Roy
Calendar movement with dead seconds and special cylinder escapement.
Dead-beat seconds watch with double-wheel duplex escapement.
Escapement by Paul Garnier
Chronometer with Earnshaw spring detent escapement, spherical balance spring.
“Chronometre de poche” with modified Earnshaw detent escapement, sold to Monsieur Hottinguer (banker of the Maison Breguet), on 11 October 1844 for 1,500 FF.
First generation early straight line lever escapement